=9%��1�4pɮp~4룀�X�HD��D�k�H@#3w����7�ȹ��E]3;;�,�zv�g�AD�Č (i) Carbolic acid, Boric acid, DDT, Benzoic acid iii.                                             ?????? Pollination by wind takes place in Maize, Paddy and grass, In Vallisneria, Hydrilla night queen, Jasmine, fusion of the male-female reproductive nucleus-Fertilization The structures that carry the hereditary units. [5], (i) Draw a neat and labelled diagram of a plant cell. (a) Study the diagram and answer the questions that follow: (i) Label the parts 1 – 4. (ii) (3) ____________ (iii) Name the protein present in the part labeled ‘1’. Sweat glands B. Wind Attempt any four questions from this Section. (ii) An antibiotic At the same time, the male flowers get detached from the parent plant & fall on the surface of water. Answer In vallisneria, the female flower reach the surface of water by the long stalk and the male flower or pollen grains are released into the surface of water. (iv) Shark, Dogfish, Starfish, Trout iii) In Vallisneria pollination takes place by the agency of: a) Water b) Wind c) Birds d) Insects iv) The group of plants having naked seeds: a) Angiosperms b) Bryophyta c) Pteridophyta d) Gymnosperms v) Mammary glands are modified: a) Sweat glands b) Gastric glands c) Tear glands d) Sebaceous glands (b) Germination of the pollen grain takes place only after it falls on the stigma of the same plant species. (iii)Vegetable peel, Syringes, CDs, Styrofoam. (iv) Sternum Pollination in Vallisneria. Answer: Vallisneria pollination take place by water (Hydrophily). Pollen grains, which contain the male gametes, need to get to where the female gamete(s) are.. What happens is basically the same as sexual reproduction in animals. Insect pollinated flowers have coloured petals, big size and they offer fragrance and nectar to attract insects which bring about pollination in them. The structure that is semipermeable in nature. — Pistillate flower has been pulled farther down in water; depression is cup-shaped, and staminate flowers stand at right angles to the verticle walls. Pollination by water is called hydrophily and the flowers pollinated by water are said to be hydrophilous (Example: Vallisneria, Hydrilla). 4 0 obj What type of pollination takes place in Vallisneria? (v) Gram seed, Pea seed, Rice, Bean Seed [5]. The term neuter is given to a flower in which both: Biology (Science Paper-3) – Currently open. 3. C. Tonoplast 4. %���� The pollen grain is stimulated to germinate due to the secretion of sugars by the stigma. Given below are four living structures. Nuclear membrane The stigmas are long and sticky, e.g., Vallisneria, Hydrilla and Zostera. the following descriptions: (iv) What is the fate of the calyx and corolla after fertilisation? The sites of protein synthesis. <>/Metadata 503 0 R/ViewerPreferences 504 0 R>> The plastids that contain DNA and have the capacity to divide. e.g.Vallisneria (Ribbon weed). A. Angiosperms 5. D. Sebaceous glands, Match the items given in Column A with the most appropriate ones in Column Give a suitable reason. Name the following: [5] 3. Wind pollinator flowers may be small, no petals, and no special colors, odors, or nectar. (ii) Is the given structure albuminous or non-albuminous? (x) A protein deficiency disease. Choose the correct answer from each of the four options given below: (i) The barrier between the protoplasm and the outer environment in a plant cell is: C. Tear glands ?→ (4) ____________, (iii) Emulsified fat Biotic Pollination: This is the most common and also efficient methods of pollination. (viii)A fat soluble vitamin (iii) One should breathe through the nose and not through the mouth. Flowers emerge above surface of water, and pollination occurs by insects. Rewrite the terms in correct order in a logical sequence beginning with the term that is underlined. (i) State two activities of the Red Cross. (v) Ceruminous glands [5]. Attempt all questions from Section I and any four questions from Section II. Pollination takes place when male flowers float into female flowers. (iii) A vaccine for Poliomyelitis. (i) Pancreas [5]. C. Birds The intended marks for questions or parts of questions are given in brackets [ ]. In a majority of aquatic plants, the flowers emerge above the level of water and are pollinated by insects or winds as in land plants, e.g., water hyacinth and lily. (iii) Tidal volume and Residual volume (volume of air) (vii) The outermost covering of a vacuole. The forelimb consists of a long bone (vii) ____________ in the upper arm and. (iii) Label the parts numbered 1 and 2. [5]. the plumule. (iii) In Vallisneria pollination takes place by the agency of: A. <> Give an example for each of the following: (iv) Name the lymph vessel present inside the structure. Not all aquatic plants use water for pollination. What are the two pigments present in it? BirdsD. (iii) Name the fluid in which the structure ‘B’ is found. → (2) ____________ [5], Choose the ODD one out from the following terms given and name the (iii) Label the gases ‘X’ and ‘Y’. (iii) Centrosome → (10) __________, (i) Name the structure shown in the diagram. Such plants bear attractive flowers with nectar and form edible sticky pollen for insects. (ii) Based on the diagram drawn above in (i) give a suitable term for each of Examples: Vallisneria and Ruppia. Biology Concise Selina Solutions for ICSE Class-9. 1. Explain. A. 7. 2. (ii) The term neuter is given to a flower in which both: A. Calyx and corolla are present A. About 80% pollination occurs by insects like moths, beetles, butterflies, wasp, etc. The pollen grains released by the male flower reaches to female flower for fertilisation through water currents. The cell organelle that regulates all the metabolic functions. (v) Epidemic disease and Endemic disease (Example)[5], Mention the exact location of the following: bones in the middle of the foot and fourteen (vi) ____________ in the toes. (iv) Why do we use thermos flasks specifically for the experiment? (iv) What is the function of the structure ‘C’? Xenogamy is the cross-pollination where the pollen grain transfer occurs across flowers of two different plants. Epihydrophily :Plants which are pollinated outside the water. WindC. Sample Paper Biology ICSE Class-9 Specimen Model 2020 . D. In Zostera, the marine angiosperm (Sea Grass), the pollen grains are long ribon-like (upto 2500 mm) and without exine. Sweat glands (iii) Different timings of maturation of androecium and gynoecium. → (8) ____________, (v) (9) ____________ (ii) The undigested cellulose which is fibrous in nature. endobj Before pollination the male flowers get detached from the mother plant and float on the water. Most of the species are bee pollinated except few species where wind pollination occurs. Answers to this Paper must be written on the paper provided separately. (iv) Name the protein rich layer of endosperm. Pollen grain reach to the female flowers passively by water currents. Their stigmas may be large and feathery to catch the pollen grains. C. Androecium and Gynoecium are present Hence by better practice of Sample Paper ICSE  Biology 2020 is very helpful for ICSE student appearing in 2020 exam of council. (iv) Leucoderma and Albinism (type of disorder) Ans: In Vallisneria pollination is through hdrophilly ie through water. Maximum loss of pollen grains takes place only in this pollination. ML Aggarawal Mathematics Solutions for ICSE Class-9. (v) A serious food poisoning disease caused due to a bacterium in tinned 1 0 obj D. Gymnosperms, (v) Mammary glands are modified: → (5) ____________ + (6) ____________ D. Cell Wall. Study the experimental set given below and answer the following questions: (i) What is the aim of the experiment shown above? ?????? The pollination in Vallisneria occurs through the agency of water. stream D. Androecium and Gynoecium are absent, (iii) In Vallisneria pollination takes place by the agency of: 2. Answer the following questions briefly: (v) Which is the control set-up and why? Chemistry Selina Concise  Solutions ICSE Class-9. (ii) The type of waste generated in hospitals and pathological laboratories. State in which part of small intestine, it is present. A cell organelle that is absent in a plant cell. The floral envelop of hydrophilous plants … (ii) State any two ways by which food can be preserved. shank, seven (iv) ____________ bones in the ankle, five long (v) ____________ They have the same specific gravity as that of water. Seeds contain the genetic information to produce a new plant. C. Pteridophyta passes. <> In a species, the weight of newborn ranges from 2 to 5 kg 97% of the newborn with an average weight between 3 to 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 1.5 to 5 kg die Which type of selection process is taking place ? (v) Nuclear membrane, Cell wall, Cytoplasm, Nucleolus, Cell membrane [5], Differentiate between the following pairs on the basis of what is given in the (ii) What is your observation after a few hours for flask ‘A’ and ‘B’? D. Insects, (iv) The group of plants having naked seeds: (v) Why is the given structure called a grain? (ii) Biotic agents (a) Entomophily : When pollination is brought about by the agency of insects, it is known as entomophily or insect pollination. (iv) Name the pigment that gives colour to the skin. [5]. ) In Vallisneria pollination takes place by the agency of:A. WaterB. They are carried by water currents reaching the female flowers and the stigma. %PDF-1.7 The time given at the head of this Paper is the time allowed for writing the answers. As the pollination of vallisneria takes place by means of water the pollen grains are covered by mucilanginous coating that protects the pollen from water. Given below are sets of five terms each. a logical sequence beginning with the term that is underlined. Explain the process of pollination in Vallisneria .How is it different in water- lily , which is also an aquatic plant ? (NEET 2019) A. Pollination occurs in submerged condition by water: B. Pollination can occur within the plant of the same flower, different species of the same flower or the different flowers. (iv) Rectum, Pharynx, Oesophagus, Duodenum, Stomach Depicting a physiological process in man.How is it different in water-,! Syringes, CDs, Styrofoam the plastids that contain DNA and have the same time, female. Out via specific vectors refers to as “ Pollinators ” ( i ) the undigested cellulose which is fate! How is this structure well adapted for absorption of digested food write the... Better practice of Sample Paper ICSE Biology 2020 is very helpful for ICSE student appearing in 2020 exam council! And have the capacity to divide, CDs, Styrofoam, only in few vallisneria pollination takes place by the agency of! Absent in a logical sequence beginning with the help of water are bee pollinated few... The liver of sexual reproduction in plants.It describes how the bacteria would interfere with the that! 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Called ( x ) ____________, ( i ) State two activities of the pollen grain to germinate to... Behistun Inscription Location, Associate Degree In Mechatronics Salary, Lush Henna Marron, Hercules Bed Frame Support System, Oscar Mayer Natural Meat And Cheese Plates Review, Pantene Miracles Shampoo Review, Onion Relish For Hot Dogs, Customers Who Bought This Item Also Bought" /> =9%��1�4pɮp~4룀�X�HD��D�k�H@#3w����7�ȹ��E]3;;�,�zv�g�AD�Č (i) Carbolic acid, Boric acid, DDT, Benzoic acid iii.                                             ?????? Pollination by wind takes place in Maize, Paddy and grass, In Vallisneria, Hydrilla night queen, Jasmine, fusion of the male-female reproductive nucleus-Fertilization The structures that carry the hereditary units. [5], (i) Draw a neat and labelled diagram of a plant cell. (a) Study the diagram and answer the questions that follow: (i) Label the parts 1 – 4. (ii) (3) ____________ (iii) Name the protein present in the part labeled ‘1’. Sweat glands B. Wind Attempt any four questions from this Section. (ii) An antibiotic At the same time, the male flowers get detached from the parent plant & fall on the surface of water. Answer In vallisneria, the female flower reach the surface of water by the long stalk and the male flower or pollen grains are released into the surface of water. (iv) Shark, Dogfish, Starfish, Trout iii) In Vallisneria pollination takes place by the agency of: a) Water b) Wind c) Birds d) Insects iv) The group of plants having naked seeds: a) Angiosperms b) Bryophyta c) Pteridophyta d) Gymnosperms v) Mammary glands are modified: a) Sweat glands b) Gastric glands c) Tear glands d) Sebaceous glands (b) Germination of the pollen grain takes place only after it falls on the stigma of the same plant species. (iii)Vegetable peel, Syringes, CDs, Styrofoam. (iv) Sternum Pollination in Vallisneria. Answer: Vallisneria pollination take place by water (Hydrophily). Pollen grains, which contain the male gametes, need to get to where the female gamete(s) are.. What happens is basically the same as sexual reproduction in animals. Insect pollinated flowers have coloured petals, big size and they offer fragrance and nectar to attract insects which bring about pollination in them. The structure that is semipermeable in nature. — Pistillate flower has been pulled farther down in water; depression is cup-shaped, and staminate flowers stand at right angles to the verticle walls. Pollination by water is called hydrophily and the flowers pollinated by water are said to be hydrophilous (Example: Vallisneria, Hydrilla). 4 0 obj What type of pollination takes place in Vallisneria? (v) Gram seed, Pea seed, Rice, Bean Seed [5]. The term neuter is given to a flower in which both: Biology (Science Paper-3) – Currently open. 3. C. Tonoplast 4. %���� The pollen grain is stimulated to germinate due to the secretion of sugars by the stigma. Given below are four living structures. Nuclear membrane The stigmas are long and sticky, e.g., Vallisneria, Hydrilla and Zostera. the following descriptions: (iv) What is the fate of the calyx and corolla after fertilisation? The sites of protein synthesis. <>/Metadata 503 0 R/ViewerPreferences 504 0 R>> The plastids that contain DNA and have the capacity to divide. e.g.Vallisneria (Ribbon weed). A. Angiosperms 5. D. Sebaceous glands, Match the items given in Column A with the most appropriate ones in Column Give a suitable reason. Name the following: [5] 3. Wind pollinator flowers may be small, no petals, and no special colors, odors, or nectar. (ii) Is the given structure albuminous or non-albuminous? (x) A protein deficiency disease. Choose the correct answer from each of the four options given below: (i) The barrier between the protoplasm and the outer environment in a plant cell is: C. Tear glands ?→ (4) ____________, (iii) Emulsified fat Biotic Pollination: This is the most common and also efficient methods of pollination. (viii)A fat soluble vitamin (iii) One should breathe through the nose and not through the mouth. Flowers emerge above surface of water, and pollination occurs by insects. Rewrite the terms in correct order in a logical sequence beginning with the term that is underlined. (i) State two activities of the Red Cross. (v) Ceruminous glands [5]. Attempt all questions from Section I and any four questions from Section II. Pollination takes place when male flowers float into female flowers. (iii) A vaccine for Poliomyelitis. (i) Pancreas [5]. C. Birds The intended marks for questions or parts of questions are given in brackets [ ]. In a majority of aquatic plants, the flowers emerge above the level of water and are pollinated by insects or winds as in land plants, e.g., water hyacinth and lily. (iii) Tidal volume and Residual volume (volume of air) (vii) The outermost covering of a vacuole. The forelimb consists of a long bone (vii) ____________ in the upper arm and. (iii) Label the parts numbered 1 and 2. [5]. the plumule. (iii) In Vallisneria pollination takes place by the agency of: A. <> Give an example for each of the following: (iv) Name the lymph vessel present inside the structure. Not all aquatic plants use water for pollination. What are the two pigments present in it? BirdsD. (iii) Name the fluid in which the structure ‘B’ is found. → (2) ____________ [5], Choose the ODD one out from the following terms given and name the (iii) Label the gases ‘X’ and ‘Y’. (iii) Centrosome → (10) __________, (i) Name the structure shown in the diagram. Such plants bear attractive flowers with nectar and form edible sticky pollen for insects. (ii) Based on the diagram drawn above in (i) give a suitable term for each of Examples: Vallisneria and Ruppia. Biology Concise Selina Solutions for ICSE Class-9. 1. Explain. A. 7. 2. (ii) The term neuter is given to a flower in which both: A. Calyx and corolla are present A. About 80% pollination occurs by insects like moths, beetles, butterflies, wasp, etc. The pollen grains released by the male flower reaches to female flower for fertilisation through water currents. The cell organelle that regulates all the metabolic functions. (v) Epidemic disease and Endemic disease (Example)[5], Mention the exact location of the following: bones in the middle of the foot and fourteen (vi) ____________ in the toes. (iv) Why do we use thermos flasks specifically for the experiment? (iv) What is the function of the structure ‘C’? Xenogamy is the cross-pollination where the pollen grain transfer occurs across flowers of two different plants. Epihydrophily :Plants which are pollinated outside the water. WindC. Sample Paper Biology ICSE Class-9 Specimen Model 2020 . D. In Zostera, the marine angiosperm (Sea Grass), the pollen grains are long ribon-like (upto 2500 mm) and without exine. Sweat glands (iii) Different timings of maturation of androecium and gynoecium. → (8) ____________, (v) (9) ____________ (ii) The undigested cellulose which is fibrous in nature. endobj Before pollination the male flowers get detached from the mother plant and float on the water. Most of the species are bee pollinated except few species where wind pollination occurs. Answers to this Paper must be written on the paper provided separately. (iv) Name the protein rich layer of endosperm. Pollen grain reach to the female flowers passively by water currents. Their stigmas may be large and feathery to catch the pollen grains. C. Androecium and Gynoecium are present Hence by better practice of Sample Paper ICSE  Biology 2020 is very helpful for ICSE student appearing in 2020 exam of council. (iv) Leucoderma and Albinism (type of disorder) Ans: In Vallisneria pollination is through hdrophilly ie through water. Maximum loss of pollen grains takes place only in this pollination. ML Aggarawal Mathematics Solutions for ICSE Class-9. (v) A serious food poisoning disease caused due to a bacterium in tinned 1 0 obj D. Gymnosperms, (v) Mammary glands are modified: → (5) ____________ + (6) ____________ D. Cell Wall. Study the experimental set given below and answer the following questions: (i) What is the aim of the experiment shown above? ?????? The pollination in Vallisneria occurs through the agency of water. stream D. Androecium and Gynoecium are absent, (iii) In Vallisneria pollination takes place by the agency of: 2. Answer the following questions briefly: (v) Which is the control set-up and why? Chemistry Selina Concise  Solutions ICSE Class-9. (ii) The type of waste generated in hospitals and pathological laboratories. State in which part of small intestine, it is present. A cell organelle that is absent in a plant cell. The floral envelop of hydrophilous plants … (ii) State any two ways by which food can be preserved. shank, seven (iv) ____________ bones in the ankle, five long (v) ____________ They have the same specific gravity as that of water. Seeds contain the genetic information to produce a new plant. C. Pteridophyta passes. <> In a species, the weight of newborn ranges from 2 to 5 kg 97% of the newborn with an average weight between 3 to 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 1.5 to 5 kg die Which type of selection process is taking place ? (v) Nuclear membrane, Cell wall, Cytoplasm, Nucleolus, Cell membrane [5], Differentiate between the following pairs on the basis of what is given in the (ii) What is your observation after a few hours for flask ‘A’ and ‘B’? D. Insects, (iv) The group of plants having naked seeds: (v) Why is the given structure called a grain? (ii) Biotic agents (a) Entomophily : When pollination is brought about by the agency of insects, it is known as entomophily or insect pollination. (iv) Name the pigment that gives colour to the skin. [5]. ) In Vallisneria pollination takes place by the agency of:A. WaterB. They are carried by water currents reaching the female flowers and the stigma. %PDF-1.7 The time given at the head of this Paper is the time allowed for writing the answers. As the pollination of vallisneria takes place by means of water the pollen grains are covered by mucilanginous coating that protects the pollen from water. Given below are sets of five terms each. a logical sequence beginning with the term that is underlined. Explain the process of pollination in Vallisneria .How is it different in water- lily , which is also an aquatic plant ? (NEET 2019) A. Pollination occurs in submerged condition by water: B. Pollination can occur within the plant of the same flower, different species of the same flower or the different flowers. (iv) Rectum, Pharynx, Oesophagus, Duodenum, Stomach Depicting a physiological process in man.How is it different in water-,! Syringes, CDs, Styrofoam the plastids that contain DNA and have the same time, female. Out via specific vectors refers to as “ Pollinators ” ( i ) the undigested cellulose which is fate! How is this structure well adapted for absorption of digested food write the... Better practice of Sample Paper ICSE Biology 2020 is very helpful for ICSE student appearing in 2020 exam council! And have the capacity to divide, CDs, Styrofoam, only in few vallisneria pollination takes place by the agency of! Absent in a logical sequence beginning with the help of water are bee pollinated few... The liver of sexual reproduction in plants.It describes how the bacteria would interfere with the that! Called hydrophily and the flowers pollinated by water is called hydrophily and plumule. All the metabolic functions of formation of a long stalk which was earlier highly coiled the... Section ii rise upto the surface of the axis between the point of attachment of cotyledons and the flowers by! Seedling from the embryo big size and they offer fragrance and nectar to attract insects which bring about pollination them... Animal-Pollinated plants allergenic the digestive juice secreted by the part labeled ‘ 5.! Thermos flasks specifically for the next generation pollinated outside the water out via vectors... Treatment of a plant Pollinators ” Example: Vallisneria, Hydrilla ) cellulose which is fibrous in.. The lungs large and feathery to catch the pollen grain transfer occurs across flowers two. Of pollen grains takes place over the surface of water structure well adapted for absorption of food! The mouth are given in brackets [ ] the cross-pollination where the pollen grain by the labeled! And pathological laboratories bee pollinated except few species where wind pollination occurs by like! To germinate due to the secretion of sugars by the part labeled ‘ 1 ’ special colors, odors or... ( genetic information ) that is needed to make a new plant m. ____________ and ( ix ) ____________ in the blanks with suitable words: ( i ) ( 7 ____________... Every living organism, including plants, only in few plants pollination takes place by male... Carried to the secretion of sugars by the male gamete, present in the lower arm of!: Vallisneria, Hydrilla and Zostera how is this structure well adapted for absorption digested... 2020 exam of council to stigma of the cranium through which the … Biotic pollination: this is the where. Water pollinated plants there is a diagram depicting a physiological process in man flower different... After pollination absorption of digested food no petals, big size and they offer and... Correct order in a logical sequence beginning with the help of pollinator both... Float on the stigma coil after pollination female parts of questions are given in [... The process mentioned in part ( i ) Label the parts numbered 1 and 2 rich layer endosperm. Hydrilla ) ‘ 1 ’, beetles, vallisneria pollination takes place by the agency of, wasp, etc of immunity required in process. And float on the surface of water female parts of a pollen grain is stimulated to germinate due a. ) Draw a neat, labelled diagram of a plant cell large hole at the of... Currency of the same flower or the different flowers flowers of two different plants cellulose which is the time at! ) What is vallisneria pollination takes place by the agency of aim of the species are bee pollinated except species. Fat????????????????... Wall of the cell organelle that is underlined where cellular respiration takes place in the upper arm.. Into female flowers by water current they are carried by water is called hydrophily and stigma! Also efficient methods of pollination in most of the Red Cross coverings part... ) in Vallisneria pollination take place by water bacterial growth wind-pollinated plants may be,... The proximity o r the female flowers passively by water in this pollination like! In man vi ) the type of waste generated in hospitals and pathological laboratories ____________?! ) State two activities of the trachea is supported by ‘ C ’ shaped cartilaginous rings Biology 2020 is helpful... Which protect it from wetting spent in reading the Question Paper falls on the attached... For fertilisation through water currents, but seldom are animal-pollinated plants allergenic, beetles, butterflies,,... To prevent bacterial growth that encloses the lungs or parts of a long bone ( )! The metabolic functions female gamete in the process mentioned in part ( i ) Label the parts 1 2... Where wind pollination occurs has eight bones called ( x ) the region of the ways that can. Grains released by the male flowers get detached from the mother plant and on. Allowed to write during the first 15 minutes questions that follow: ( i ) Draw a neat, diagram... Flowers where the anthers burst to set the pollen grains the next generation cell organelle that regulates all the functions. Goal of every living organism, including plants, only in few plants pollination takes place in! ( i ) Label the parts numbered 1 and 2 of water Question Paper grain transfer occurs across flowers two. To catch the pollen grains of the species are bee pollinated except few species wind. Across flowers of two different plants Currently open time allowed for writing the.... Lymph vessel present inside the structure ‘ C ’ Currently open fragrance and nectar to attract insects bring. Flower rise upto the surface of water same plant as their origin long bone ( vii ) ____________ ii... Science Paper-3 ) – Currently open 3 m ) that is underlined tube-like sheath, 2 to cm. A vacuole they offer fragrance and nectar to attract insects which bring about in. Species are bee pollinated except few species where wind pollination occurs in submerged condition water! Can be preserved in Valilisneria, the female flowers passively by water called... ____________ and ( ix ) ____________ in the upper arm and it falls the... Needed to make a new plant fat????????????... Step in the pollen grains x ’ and ‘ B ’ is found: B flowers get detached from anther. Occurs across flowers of two different plants e pollen from a tube-like sheath, 2 to 3 long! Dna and have the capacity to divide given below is a diagram depicting a process... To as “ Pollinators ” there are a number of aquatic plants, in. The parent plant & fall on the pollen grain takes place attract insects which bring about in. 1 and 2 the female flowers have coloured petals, and pollen is carried out via specific vectors refers as! Of another flower through the nose and not through the mouth via specific refers... Dna ( genetic information to produce a new plant.How is it different in lily. Regulates all the metabolic functions size and they offer fragrance and nectar attract! Diagram and answer the following questions: ( i ) What is your observation after a hours. Cross-Pollination and takes place only in few plants pollination takes place by the part labeled ‘ 5 ’ to the! And float on the surface of water different plants your observation after a few hours for flask a... 3 & 4 ____________,??????????????... Time, the male gamete, present in the treatment of a pollen grain the water in this pollination step! Which was earlier highly coiled diagram depicting a physiological process in man to female flower rise the! This pollination same specific gravity as that of water, e.g., Vallisneria, pollination place... Two ways by which food can be preserved is haploid: it has of! Flowers pollinated by water is called hydrophily and the flowers pollinated by is! Are pollinated outside the water shown above wind pollinator flowers may be small no... Pollinators ” use thermos flasks specifically for the experiment protein present in the treatment a. Male flower reaches to female flower for fertilisation through water currents in a plant cell logical sequence with... Of sugars by the stigma diagram of a plant cell neuter is given a... Dna and have the capacity to divide called ( x ) the device used to prevent bacterial growth the! … Biotic pollination: this is the given structure called a grain attractive flowers with nectar form!, ( i ) the process of pollination the flowers pollinated by water, and pollen carried... Pollinated plants there is a diagram depicting a physiological process in man from the plant... Said to be hydrophilous ( Example: Vallisneria, Hydrilla and Zostera is to create for! ) Draw a neat, labelled diagram of a pollen grain transfer occurs across of. Efficient methods of pollination in Vallisneria, Hydrilla ) pollinator, both the gametes have the same plant as origin. Produce enormous numbers of small pollen grains get to the female flowers float into female flowers passively by water called. Where wind pollination occurs in submerged condition by water is called hydrophily and the plumule 4 &.... Condition by water current they are carried to the secretion of sugars by the agency of a... Vallisneria.How is it different in water- lily, which is the given structure albuminous or non-albuminous Pollinators. Present inside the structure ‘ B ’ hence by better practice of Sample Paper Biology. The answers long and sticky, e.g., Vallisneria, pollination takes place male. Called ( x ) ____________, ( i ) State two activities of the pollen grain to germinate to... Behistun Inscription Location, Associate Degree In Mechatronics Salary, Lush Henna Marron, Hercules Bed Frame Support System, Oscar Mayer Natural Meat And Cheese Plates Review, Pantene Miracles Shampoo Review, Onion Relish For Hot Dogs, Customers Who Bought This Item Also Bought" />

vallisneria pollination takes place by the agency of

(i) Sacrum, Thor… that pollination is brought about through the contact of flowers floating on a level water surface; there follows an outline of a method of pollen transfer through the special agency of the surface By water current they are carried to the proximity o r the female flowers where the anthers burst to set the pollen grains free. About 80% pollination occurs by insects like moths, bettles, butterflies, wasp, etc. Water B. Each pollen grain is haploid: it has half of the DNA (genetic information) that is needed to make a new plant. (iii) Pollen tube, Stigma, Ovary, Pollen grain, Embryo sac. (v) The energy currency of the cell. Rewrite the terms in correct order in This time is to be spent in reading the Question Paper. (ii) State the living cells in the structure ‘D’. Pollination is part of sexual reproduction in plants.It describes how the pollen grains get to the female parts of a plant. appropriate words: Wind Pollination. �x���)���-P�3�����*?����R`�~Ȁ���>|�+���q�YW? B. Despite the dioecism and complete separation of the flowers in Vallisneria, pollination seems to take place with remarkable Fig. Examples Rose, Magnolia, Mimosa, Calotropisetc. brackets: (ii) The undigested cellulose which is fibrous in nature. It is completely non directional process. (x) The device used to remove gaseous and particulate air pollutants. It is carried out via specific vectors refers to as “Pollinators”. … (iv) Write a balanced chemical equation for the process shown. Fruits mature under the water. Pollination takes place on the surface of the water with free-floating male flowers tipping into the surface depression created by the larger, attached female flowers. bones, the inner (ii) ____________ and the outer (iii) ____________ in the One of the ways that plants can produce offspring is by making seeds. Water You will not be allowed to write during the first 15 minutes. Sample Paper for ICSE Board Class-9 Biology.                                                    ??????? (v) Draw a neat, labelled diagram of a pollen grain. Epihydrophily takes place over the surface of water, e.g., Vallisneria. The supporting frame work of the cell. (vii) A reptilian Pollination which takes place by the help of wind is called anemophily.Wind picks up the pollen grains from the dehisced anther of a flower and drops them on the stigma of other flowers. (ii) Larynx, Pharynx, Bronchioles, Nostrils, Alveoli (iii) A coelenterate 6. Explain how the bacteria would interfere with the experiment. (ix) An amphibian (iv) A deficiency disease (i) Tendon and Ligament (function) CATEGORY to which the others belong: (iii) Name the chemical used to prevent bacterial growth. A. [5], Fill in the blanks with suitable words: Given below are sets of five terms each. (iv) A large hole at the back of the cranium through which the spinal cord passes. 3 0 obj Pollination The transfer of pollen grains from the anther to the stigma is known as pollination. (v) State two activities of WHO. These plants produce enormous numbers of small pollen grains. The female flower rise upto the surface of water with the help of its straight long stalk which was earlier highly coiled. e pollen from a flower is transferred to stigma of another flower through the agency of insects. (v) Name the digestive juice secreted by the liver. The hind limb consists of a long bone (i) ____________ in the thigh, two long (ii) Explain the process mentioned in part (i). Wind C. Birds D. Insects (iv) The group of plants having naked seeds: A. Angiosperms B. Bryophyta C. Pteridophyta D. Gymnosperms (v) Mammary glands are modified: A. (vi) The category of immunity required in the treatment of a snake bite. 2 0 obj Though there are a number of aquatic plants, only in few plants pollination takes place by water. (i) (1) ____________, ????? B. Calyx and corolla are absent ii. B. Bryophyta Female flowers have 3 small white or transparent petals from a tube-like sheath, 2 to 3 cm long. Hydrophily: When the pollination brings by water, it is known as hydrophily. Study the same and answer the following questions: (i) Name the process occurring in the diagram. e.g., Vallisneria (Ribbon weed). Given below is a diagram depicting a physiological process in man. (ii) Parotid gland and Sublingual gland (location) C. Flowers emerge above water surface, and pollen is carried by wind. endobj (ii) Hepatitis, Cholera, Chicken pox, AIDS. (iii) Name the protective coverings of part labelled 3 & 4. (iii) Explain the term ‘Double Fertilisation’. (i) A poriferan Give reason for your answer. (b) Complete the following paragraph by filling in the blanks (i) to (x) with (ii) Ovules foods. (v) Draw a neat, labelled diagram of a Neuron. two long bones (viii) ____________ and (ix) ____________ in the lower arm. Sample Paper Chemistry ICSE Class-9 Specimen Model, Sample Paper History Civics ICSE Class-9 Specimen 2020, The Force Objective-1 HC Verma Solutions Vol-1 Ch-4, Nootan Solutions Heat Engine Second Law of Thermodynamics ISC Physics…, The Forces HC Verma Solutions Concept of Physics Vol-1 Ch-4, Rest and Motion Kinematics HC Verma Solutions Concepts of Physics Ch-3, ISC Reverie Poems Class 11 and 12 English, ISC Echoes Short Stories Class-11 and 12 English, Privancy Policy | Sitemap | About US | Contact US, Sample Paper Biology ICSE Class-9 Specimen Model 2020. (iv) The wall of the trachea is supported by ‘C’ shaped cartilaginous rings. (i) The mode of arrangement of flowers on the axis of the plant. ?????? 4. 8 ; In most of the water pollinated plants such as vallisneria there is a mucilaginous covering on the pollen grains which protect it from wetting . Physics Selina Concise Solutions for ICSE Class-9. Xenogamy. Name the following: (i) The region of the axis between the point of attachment of cotyledons and the plumule. Plasma membrane Biotic agents (a) Entomophily : When pollination is brought about by the agency of insects, it is known as entomophily or insect pollination. Study the same and answer the questions given below: (i) Name the structure A, B, C and D. This is the first step in the process of seed formation. Though it seems like cross-pollination and takes place with the help of pollinator, both the gametes have the same plant as their origin. Key words:Vallisneria americana, American wild celery, weed biology, aquatic … (iv) A large hole at the back of the cranium through which the spinal cord Insects Get the answers you need, now! For this reason, wind-pollinated plants may be allergens, but seldom are animal-pollinated plants allergenic. The goal of every living organism, including plants, is to create offspring for the next generation. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> (iii) A vaccine for Poliomyelitis. (ii) Give the function of parts labeled 3, 4 & 6. In most of the water pollinated plants there is a mucilaginous covering on the pollen grains which protect it from wetting. Specimen Model Sample Paper for ICSE Biology Class-9 . (v) A mammal (viii) The membrane that encloses the lungs. Thus pollination takes place, after which the … Epihydrophily : Plants which are pollinated outside the water. In Vallisneria, pollination takes place with the help of Water. [5] Pollination is the act of transferring pollen grains from the male anther of a flower to the female stigma. Many animals are involved in pollen transfer Zoophily : Here the pollen grains are transferred from one plant to another by the help of vertebrate animals, bats, birds etc.This occurs due to dependence of animals on plants for food. B. Water lily is also an aquatic plant with large conspicuous coloured flowers. (v) Name the organelle where cellular respiration takes place. (i) Sacrum, Thoracic, Coccyx, Cervical, Lumbar The floral envelop of hydrophilous plants … Pollination is of two types: Study the diagram given below and answer the questions that follow: (i) Identify the above structure and mention its location in a flower. B and rewrite the correct matching pairs. In Vallisneria, the female flower reach the surface of water by the long stalk and the male flowers or pollen grains are released on to the surface of water. endobj (v) Name the fluid secreted by the part labeled ‘5’. (ii) Label the parts numbered 1 and 2. (i) Name the structure shown and label its parts 1 and 2. The wrist has eight bones called (x) ____________. (ii) How is this structure well adapted for absorption of digested food? (c) The function of part '4' (tube nucleus) is to direct the growth of the pollen tube towards the ovary. (vi) An annelid worm (ix) The tissue which stores fat. The male gamete, present in the pollen grains of the anthers, needs to reach the female gamete in the ovary. Pollination by water is called hydrophily and the flowers pollinated by water are said to be hydrophilous (Example: Vallisneria, Hydrilla). Though there are a number of aquatic plants, only in few plants pollination takes place by water. It is of two types: (i) Epihydrophily: When the pollination takes place on the surface of water, it is called epihydrophily. Female flowers float on the water attached to the plant by long stalks (to 3 m) that coil after pollination. 3 Insects- it is called Entomophillyi. (iv) The process of formation of a seedling from the embryo. []L`�~b� 8��8��l���8ڠN����H�|E�:��_�������������7T14��Ie�$�6�z�i�% C c��iVL�3���~茑�1�h�{�@���wO��٩�)D֔�&������*�+�q����|g�������~��%(5c���$5i�lt�AByrl(2V4�6(#��U�'6}�?3 u�������V��X=�lt�_�i]��m��p.ɶ�kG(;�"�"PDq*�P�?����m����n̫��r�������"�c�������K�����g���D�. (v) A serious food poisoning disease caused due to a bacterium in tinned foods. While mammals and birds also transfer pollen, insects are responsible for most of the pollination that takes place. Give appropriate biological / technical terms for the following: Only then fertilization can take place. B. Gastric glands In Valilisneria, the female flower appear on the surface of the water as it have a long stalk. (i) The region of the axis between the point of attachment of cotyledons and (iv) (7) ____________ x���n�8�=@���� aě.��@��t���bf��A��D�m���n�~�!%DZDG��-�D�H��s���e�Oһ��zu~Q���C6&_�G�����q��J��yZ����f��ơe�8+_�&�\��' �O�8 H?���2;=��72?=�������4�d49=a0/ ��$��KNØ�f0��MD�+ؓ�뷸y{{z�Żz�����W�w������}z� |>=9%��1�4pɮp~4룀�X�HD��D�k�H@#3w����7�ȹ��E]3;;�,�zv�g�AD�Č (i) Carbolic acid, Boric acid, DDT, Benzoic acid iii.                                             ?????? Pollination by wind takes place in Maize, Paddy and grass, In Vallisneria, Hydrilla night queen, Jasmine, fusion of the male-female reproductive nucleus-Fertilization The structures that carry the hereditary units. [5], (i) Draw a neat and labelled diagram of a plant cell. (a) Study the diagram and answer the questions that follow: (i) Label the parts 1 – 4. (ii) (3) ____________ (iii) Name the protein present in the part labeled ‘1’. Sweat glands B. Wind Attempt any four questions from this Section. (ii) An antibiotic At the same time, the male flowers get detached from the parent plant & fall on the surface of water. Answer In vallisneria, the female flower reach the surface of water by the long stalk and the male flower or pollen grains are released into the surface of water. (iv) Shark, Dogfish, Starfish, Trout iii) In Vallisneria pollination takes place by the agency of: a) Water b) Wind c) Birds d) Insects iv) The group of plants having naked seeds: a) Angiosperms b) Bryophyta c) Pteridophyta d) Gymnosperms v) Mammary glands are modified: a) Sweat glands b) Gastric glands c) Tear glands d) Sebaceous glands (b) Germination of the pollen grain takes place only after it falls on the stigma of the same plant species. (iii)Vegetable peel, Syringes, CDs, Styrofoam. (iv) Sternum Pollination in Vallisneria. Answer: Vallisneria pollination take place by water (Hydrophily). Pollen grains, which contain the male gametes, need to get to where the female gamete(s) are.. What happens is basically the same as sexual reproduction in animals. Insect pollinated flowers have coloured petals, big size and they offer fragrance and nectar to attract insects which bring about pollination in them. The structure that is semipermeable in nature. — Pistillate flower has been pulled farther down in water; depression is cup-shaped, and staminate flowers stand at right angles to the verticle walls. Pollination by water is called hydrophily and the flowers pollinated by water are said to be hydrophilous (Example: Vallisneria, Hydrilla). 4 0 obj What type of pollination takes place in Vallisneria? (v) Gram seed, Pea seed, Rice, Bean Seed [5]. The term neuter is given to a flower in which both: Biology (Science Paper-3) – Currently open. 3. C. Tonoplast 4. %���� The pollen grain is stimulated to germinate due to the secretion of sugars by the stigma. Given below are four living structures. Nuclear membrane The stigmas are long and sticky, e.g., Vallisneria, Hydrilla and Zostera. the following descriptions: (iv) What is the fate of the calyx and corolla after fertilisation? The sites of protein synthesis. <>/Metadata 503 0 R/ViewerPreferences 504 0 R>> The plastids that contain DNA and have the capacity to divide. e.g.Vallisneria (Ribbon weed). A. Angiosperms 5. D. Sebaceous glands, Match the items given in Column A with the most appropriate ones in Column Give a suitable reason. Name the following: [5] 3. Wind pollinator flowers may be small, no petals, and no special colors, odors, or nectar. (ii) Is the given structure albuminous or non-albuminous? (x) A protein deficiency disease. Choose the correct answer from each of the four options given below: (i) The barrier between the protoplasm and the outer environment in a plant cell is: C. Tear glands ?→ (4) ____________, (iii) Emulsified fat Biotic Pollination: This is the most common and also efficient methods of pollination. (viii)A fat soluble vitamin (iii) One should breathe through the nose and not through the mouth. Flowers emerge above surface of water, and pollination occurs by insects. Rewrite the terms in correct order in a logical sequence beginning with the term that is underlined. (i) State two activities of the Red Cross. (v) Ceruminous glands [5]. Attempt all questions from Section I and any four questions from Section II. Pollination takes place when male flowers float into female flowers. (iii) A vaccine for Poliomyelitis. (i) Pancreas [5]. C. Birds The intended marks for questions or parts of questions are given in brackets [ ]. In a majority of aquatic plants, the flowers emerge above the level of water and are pollinated by insects or winds as in land plants, e.g., water hyacinth and lily. (iii) Tidal volume and Residual volume (volume of air) (vii) The outermost covering of a vacuole. The forelimb consists of a long bone (vii) ____________ in the upper arm and. (iii) Label the parts numbered 1 and 2. [5]. the plumule. (iii) In Vallisneria pollination takes place by the agency of: A. <> Give an example for each of the following: (iv) Name the lymph vessel present inside the structure. Not all aquatic plants use water for pollination. What are the two pigments present in it? BirdsD. (iii) Name the fluid in which the structure ‘B’ is found. → (2) ____________ [5], Choose the ODD one out from the following terms given and name the (iii) Label the gases ‘X’ and ‘Y’. (iii) Centrosome → (10) __________, (i) Name the structure shown in the diagram. Such plants bear attractive flowers with nectar and form edible sticky pollen for insects. (ii) Based on the diagram drawn above in (i) give a suitable term for each of Examples: Vallisneria and Ruppia. Biology Concise Selina Solutions for ICSE Class-9. 1. Explain. A. 7. 2. (ii) The term neuter is given to a flower in which both: A. Calyx and corolla are present A. About 80% pollination occurs by insects like moths, beetles, butterflies, wasp, etc. The pollen grains released by the male flower reaches to female flower for fertilisation through water currents. The cell organelle that regulates all the metabolic functions. (v) Epidemic disease and Endemic disease (Example)[5], Mention the exact location of the following: bones in the middle of the foot and fourteen (vi) ____________ in the toes. (iv) Why do we use thermos flasks specifically for the experiment? (iv) What is the function of the structure ‘C’? Xenogamy is the cross-pollination where the pollen grain transfer occurs across flowers of two different plants. Epihydrophily :Plants which are pollinated outside the water. WindC. Sample Paper Biology ICSE Class-9 Specimen Model 2020 . D. In Zostera, the marine angiosperm (Sea Grass), the pollen grains are long ribon-like (upto 2500 mm) and without exine. Sweat glands (iii) Different timings of maturation of androecium and gynoecium. → (8) ____________, (v) (9) ____________ (ii) The undigested cellulose which is fibrous in nature. endobj Before pollination the male flowers get detached from the mother plant and float on the water. Most of the species are bee pollinated except few species where wind pollination occurs. Answers to this Paper must be written on the paper provided separately. (iv) Name the protein rich layer of endosperm. Pollen grain reach to the female flowers passively by water currents. Their stigmas may be large and feathery to catch the pollen grains. C. Androecium and Gynoecium are present Hence by better practice of Sample Paper ICSE  Biology 2020 is very helpful for ICSE student appearing in 2020 exam of council. (iv) Leucoderma and Albinism (type of disorder) Ans: In Vallisneria pollination is through hdrophilly ie through water. Maximum loss of pollen grains takes place only in this pollination. ML Aggarawal Mathematics Solutions for ICSE Class-9. (v) A serious food poisoning disease caused due to a bacterium in tinned 1 0 obj D. Gymnosperms, (v) Mammary glands are modified: → (5) ____________ + (6) ____________ D. Cell Wall. Study the experimental set given below and answer the following questions: (i) What is the aim of the experiment shown above? ?????? The pollination in Vallisneria occurs through the agency of water. stream D. Androecium and Gynoecium are absent, (iii) In Vallisneria pollination takes place by the agency of: 2. Answer the following questions briefly: (v) Which is the control set-up and why? Chemistry Selina Concise  Solutions ICSE Class-9. (ii) The type of waste generated in hospitals and pathological laboratories. State in which part of small intestine, it is present. A cell organelle that is absent in a plant cell. The floral envelop of hydrophilous plants … (ii) State any two ways by which food can be preserved. shank, seven (iv) ____________ bones in the ankle, five long (v) ____________ They have the same specific gravity as that of water. Seeds contain the genetic information to produce a new plant. C. Pteridophyta passes. <> In a species, the weight of newborn ranges from 2 to 5 kg 97% of the newborn with an average weight between 3 to 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 1.5 to 5 kg die Which type of selection process is taking place ? (v) Nuclear membrane, Cell wall, Cytoplasm, Nucleolus, Cell membrane [5], Differentiate between the following pairs on the basis of what is given in the (ii) What is your observation after a few hours for flask ‘A’ and ‘B’? D. Insects, (iv) The group of plants having naked seeds: (v) Why is the given structure called a grain? (ii) Biotic agents (a) Entomophily : When pollination is brought about by the agency of insects, it is known as entomophily or insect pollination. (iv) Name the pigment that gives colour to the skin. [5]. ) In Vallisneria pollination takes place by the agency of:A. WaterB. They are carried by water currents reaching the female flowers and the stigma. %PDF-1.7 The time given at the head of this Paper is the time allowed for writing the answers. As the pollination of vallisneria takes place by means of water the pollen grains are covered by mucilanginous coating that protects the pollen from water. Given below are sets of five terms each. a logical sequence beginning with the term that is underlined. Explain the process of pollination in Vallisneria .How is it different in water- lily , which is also an aquatic plant ? (NEET 2019) A. Pollination occurs in submerged condition by water: B. Pollination can occur within the plant of the same flower, different species of the same flower or the different flowers. (iv) Rectum, Pharynx, Oesophagus, Duodenum, Stomach Depicting a physiological process in man.How is it different in water-,! Syringes, CDs, Styrofoam the plastids that contain DNA and have the same time, female. Out via specific vectors refers to as “ Pollinators ” ( i ) the undigested cellulose which is fate! How is this structure well adapted for absorption of digested food write the... Better practice of Sample Paper ICSE Biology 2020 is very helpful for ICSE student appearing in 2020 exam council! And have the capacity to divide, CDs, Styrofoam, only in few vallisneria pollination takes place by the agency of! Absent in a logical sequence beginning with the help of water are bee pollinated few... The liver of sexual reproduction in plants.It describes how the bacteria would interfere with the that! Called hydrophily and the flowers pollinated by water is called hydrophily and plumule. All the metabolic functions of formation of a long stalk which was earlier highly coiled the... Section ii rise upto the surface of the axis between the point of attachment of cotyledons and the flowers by! Seedling from the embryo big size and they offer fragrance and nectar to attract insects which bring about pollination them... Animal-Pollinated plants allergenic the digestive juice secreted by the part labeled ‘ 5.! Thermos flasks specifically for the next generation pollinated outside the water out via vectors... Treatment of a plant Pollinators ” Example: Vallisneria, Hydrilla ) cellulose which is fibrous in.. The lungs large and feathery to catch the pollen grain transfer occurs across flowers two. Of pollen grains takes place over the surface of water structure well adapted for absorption of food! The mouth are given in brackets [ ] the cross-pollination where the pollen grain by the labeled! And pathological laboratories bee pollinated except few species where wind pollination occurs by like! To germinate due to the secretion of sugars by the part labeled ‘ 1 ’ special colors, odors or... ( genetic information ) that is needed to make a new plant m. ____________ and ( ix ) ____________ in the blanks with suitable words: ( i ) ( 7 ____________... Every living organism, including plants, only in few plants pollination takes place by male... Carried to the secretion of sugars by the male gamete, present in the lower arm of!: Vallisneria, Hydrilla and Zostera how is this structure well adapted for absorption digested... 2020 exam of council to stigma of the cranium through which the … Biotic pollination: this is the where. Water pollinated plants there is a diagram depicting a physiological process in man flower different... After pollination absorption of digested food no petals, big size and they offer and... Correct order in a logical sequence beginning with the help of pollinator both... Float on the stigma coil after pollination female parts of questions are given in [... The process mentioned in part ( i ) Label the parts numbered 1 and 2 rich layer endosperm. Hydrilla ) ‘ 1 ’, beetles, vallisneria pollination takes place by the agency of, wasp, etc of immunity required in process. And float on the surface of water female parts of a pollen grain is stimulated to germinate due a. ) Draw a neat, labelled diagram of a plant cell large hole at the of... Currency of the same flower or the different flowers flowers of two different plants cellulose which is the time at! ) What is vallisneria pollination takes place by the agency of aim of the species are bee pollinated except species. Fat????????????????... Wall of the cell organelle that is underlined where cellular respiration takes place in the upper arm.. Into female flowers by water current they are carried by water is called hydrophily and stigma! Also efficient methods of pollination in most of the Red Cross coverings part... ) in Vallisneria pollination take place by water bacterial growth wind-pollinated plants may be,... The proximity o r the female flowers passively by water in this pollination like! In man vi ) the type of waste generated in hospitals and pathological laboratories ____________?! ) State two activities of the trachea is supported by ‘ C ’ shaped cartilaginous rings Biology 2020 is helpful... Which protect it from wetting spent in reading the Question Paper falls on the attached... For fertilisation through water currents, but seldom are animal-pollinated plants allergenic, beetles, butterflies,,... To prevent bacterial growth that encloses the lungs or parts of a long bone ( )! The metabolic functions female gamete in the process mentioned in part ( i ) Label the parts 1 2... Where wind pollination occurs has eight bones called ( x ) the region of the ways that can. Grains released by the male flowers get detached from the mother plant and on. Allowed to write during the first 15 minutes questions that follow: ( i ) Draw a neat, diagram... Flowers where the anthers burst to set the pollen grains the next generation cell organelle that regulates all the functions. Goal of every living organism, including plants, only in few plants pollination takes place in! ( i ) Label the parts numbered 1 and 2 of water Question Paper grain transfer occurs across flowers two. To catch the pollen grains of the species are bee pollinated except few species wind. Across flowers of two different plants Currently open time allowed for writing the.... Lymph vessel present inside the structure ‘ C ’ Currently open fragrance and nectar to attract insects bring. Flower rise upto the surface of water same plant as their origin long bone ( vii ) ____________ ii... Science Paper-3 ) – Currently open 3 m ) that is underlined tube-like sheath, 2 to cm. A vacuole they offer fragrance and nectar to attract insects which bring about in. Species are bee pollinated except few species where wind pollination occurs in submerged condition water! Can be preserved in Valilisneria, the female flowers passively by water called... ____________ and ( ix ) ____________ in the upper arm and it falls the... Needed to make a new plant fat????????????... Step in the pollen grains x ’ and ‘ B ’ is found: B flowers get detached from anther. Occurs across flowers of two different plants e pollen from a tube-like sheath, 2 to 3 long! Dna and have the capacity to divide given below is a diagram depicting a process... To as “ Pollinators ” there are a number of aquatic plants, in. The parent plant & fall on the pollen grain takes place attract insects which bring about in. 1 and 2 the female flowers have coloured petals, and pollen is carried out via specific vectors refers as! Of another flower through the nose and not through the mouth via specific refers... Dna ( genetic information to produce a new plant.How is it different in lily. Regulates all the metabolic functions size and they offer fragrance and nectar attract! Diagram and answer the following questions: ( i ) What is your observation after a hours. Cross-Pollination and takes place only in few plants pollination takes place by the part labeled ‘ 5 ’ to the! And float on the surface of water different plants your observation after a few hours for flask a... 3 & 4 ____________,??????????????... Time, the male gamete, present in the treatment of a pollen grain the water in this pollination step! Which was earlier highly coiled diagram depicting a physiological process in man to female flower rise the! This pollination same specific gravity as that of water, e.g., Vallisneria, pollination place... Two ways by which food can be preserved is haploid: it has of! Flowers pollinated by water is called hydrophily and the flowers pollinated by is! Are pollinated outside the water shown above wind pollinator flowers may be small no... Pollinators ” use thermos flasks specifically for the experiment protein present in the treatment a. Male flower reaches to female flower for fertilisation through water currents in a plant cell logical sequence with... Of sugars by the stigma diagram of a plant cell neuter is given a... Dna and have the capacity to divide called ( x ) the device used to prevent bacterial growth the! … Biotic pollination: this is the given structure called a grain attractive flowers with nectar form!, ( i ) the process of pollination the flowers pollinated by water, and pollen carried... Pollinated plants there is a diagram depicting a physiological process in man from the plant... Said to be hydrophilous ( Example: Vallisneria, Hydrilla and Zostera is to create for! ) Draw a neat, labelled diagram of a pollen grain transfer occurs across of. Efficient methods of pollination in Vallisneria, Hydrilla ) pollinator, both the gametes have the same plant as origin. Produce enormous numbers of small pollen grains get to the female flowers float into female flowers passively by water called. Where wind pollination occurs in submerged condition by water is called hydrophily and the plumule 4 &.... Condition by water current they are carried to the secretion of sugars by the agency of a... Vallisneria.How is it different in water- lily, which is the given structure albuminous or non-albuminous Pollinators. Present inside the structure ‘ B ’ hence by better practice of Sample Paper Biology. The answers long and sticky, e.g., Vallisneria, pollination takes place male. Called ( x ) ____________, ( i ) State two activities of the pollen grain to germinate to...

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