The goal of every living organism, including plants, is to create offspring for the next generation. The plastids that contain DNA and have the capacity to divide. Ans: In Vallisneria pollination is through hdrophilly ie through water. (i) Name the structure shown and label its parts 1 and 2. �x���)���-P�3�����*?����R`�~Ȁ���>|�+���q�YW? Pollination is part of sexual reproduction in plants.It describes how the pollen grains get to the female parts of a plant. 2. Hence by better practice of Sample Paper ICSE  Biology 2020 is very helpful for ICSE student appearing in 2020 exam of council. [5]. Given below is a diagram depicting a physiological process in man. Before pollination the male flowers get detached from the mother plant and float on the water. two long bones (viii) ____________ and (ix) ____________ in the lower arm. endobj Study the same and answer the questions given below: (i) Name the structure A, B, C and D. Epihydrophily :Plants which are pollinated outside the water. (iv) Leucoderma and Albinism (type of disorder) (v) Gram seed, Pea seed, Rice, Bean Seed [5]. C. Tonoplast Water The stigmas are long and sticky, e.g., Vallisneria, Hydrilla and Zostera. This is the first step in the process of seed formation. Pollination by water is called hydrophily and the flowers pollinated by water are said to be hydrophilous (Example: Vallisneria, Hydrilla). (ii) Label the parts numbered 1 and 2. (iii) Pollen tube, Stigma, Ovary, Pollen grain, Embryo sac. (iii) Name the fluid in which the structure ‘B’ is found. This time is to be spent in reading the Question Paper. (ii) The undigested cellulose which is fibrous in nature. In most of the water pollinated plants there is a mucilaginous covering on the pollen grains which protect it from wetting. bones, the inner (ii) ____________ and the outer (iii) ____________ in the Rewrite the terms in correct order in a logical sequence beginning with the term that is underlined. iii. ii. C. Tear glands Study the diagram given below and answer the questions that follow: (i) Identify the above structure and mention its location in a flower. Pollen grain reach to the female flowers passively by water currents. (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’? (iv) A large hole at the back of the cranium through which the spinal cord passes. (iv) Shark, Dogfish, Starfish, Trout C. Birds (iii) Label the gases ‘X’ and ‘Y’. Pollination by water is called hydrophily and the flowers pollinated by water are said to be hydrophilous (Example: Vallisneria, Hydrilla). Pollination takes place when male flowers float into female flowers. Give appropriate biological / technical terms for the following: (iv) Why do we use thermos flasks specifically for the experiment? 3 Insects- it is called Entomophillyi. Biology Concise Selina Solutions for ICSE Class-9. ?????? Biotic Pollination: This is the most common and also efficient methods of pollination. … (viii)A fat soluble vitamin endobj (v) Name the fluid secreted by the part labeled ‘5’. Name the following: (i) The region of the axis between the point of attachment of cotyledons and the plumule. 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. (v) A mammal → (10) __________, (i) Name the structure shown in the diagram.                                                    ??????? Epihydrophily takes place over the surface of water, e.g., Vallisneria. The wrist has eight bones called (x) ____________. Most of the species are bee pollinated except few species where wind pollination occurs. (iii)Vegetable peel, Syringes, CDs, Styrofoam. endobj In Valilisneria, the female flower appear on the surface of the water as it have a long stalk. (a) Study the diagram and answer the questions that follow: (i) Label the parts 1 – 4. The sites of protein synthesis. About 80% pollination occurs by insects like moths, beetles, butterflies, wasp, etc. 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. 6. 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 4 0 obj While mammals and birds also transfer pollen, insects are responsible for most of the pollination that takes place. (ii) (3) ____________ About 80% pollination occurs by insects like moths, bettles, butterflies, wasp, etc. Not all aquatic plants use water for pollination. Explain how the bacteria would interfere with the experiment. Pollination in Vallisneria. The term neuter is given to a flower in which both: Biology (Science Paper-3) – Currently open. Pollination is the act of transferring pollen grains from the male anther of a flower to the female stigma. One of the ways that plants can produce offspring is by making seeds. 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. (v) Name the digestive juice secreted by the liver. %���� 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 4. (v) Name the organelle where cellular respiration takes place. (i) (1) ____________, ????? Thus pollination takes place, after which the … (iv) A large hole at the back of the cranium through which the spinal cord B. Study the experimental set given below and answer the following questions: (i) What is the aim of the experiment shown above? Examples: Vallisneria and Ruppia. The cell organelle that regulates all the metabolic functions. 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 (ii) The term neuter is given to a flower in which both: A. Calyx and corolla are present BirdsD. Give an example for each of the following: → (5) ____________ + (6) ____________ State in which part of small intestine, it is present. D. Gymnosperms, (v) Mammary glands are modified: (ii) State the living cells in the structure ‘D’. Wind pollinator flowers may be small, no petals, and no special colors, odors, or nectar. A. Angiosperms Sweat glands B. C. Flowers emerge above water surface, and pollen is carried by wind. Sample Paper Biology ICSE Class-9 Specimen Model 2020 . C. Androecium and Gynoecium are present brackets: 3 0 obj Physics Selina Concise Solutions for ICSE Class-9. Water lily is also an aquatic plant with large conspicuous coloured flowers. Biotic agents (a) Entomophily : When pollination is brought about by the agency of insects, it is known as entomophily or insect pollination. ?????? (NEET 2019) A. Pollination occurs in submerged condition by water: B. shank, seven (iv) ____________ bones in the ankle, five long (v) ____________ Sample Paper for ICSE Board Class-9 Biology. Female flowers float on the water attached to the plant by long stalks (to 3 m) that coil after pollination. 4. a logical sequence beginning with the term that is underlined. (iv) A deficiency disease Insect pollinated flowers have coloured petals, big size and they offer fragrance and nectar to attract insects which bring about pollination in them. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> 1. ) In Vallisneria pollination takes place by the agency of:A. WaterB. Sweat glands (iv) Sternum (iv) Name the lymph vessel present inside the structure. [5] (i) Tendon and Ligament (function) (iii) Name the protective coverings of part labelled 3 & 4. Flowers emerge above surface of water, and pollination occurs by insects. (iii) Different timings of maturation of androecium and gynoecium. Name the following: [5] B. Calyx and corolla are absent []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�. The structure that is semipermeable in nature. stream Explain. Seeds contain the genetic information to produce a new plant. (ii) Larynx, Pharynx, Bronchioles, Nostrils, Alveoli Pollination can occur within the plant of the same flower, different species of the same flower or the different flowers. foods. (vii) The outermost covering of a vacuole. The pollen grain is stimulated to germinate due to the secretion of sugars by the stigma. (v) The energy currency of the cell. Study the same and answer the following questions: (i) Name the process occurring in the diagram. 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 ? 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) What is the function of the structure ‘C’? Hydrophily: When the pollination brings by water, it is known as hydrophily. Despite the dioecism and complete separation of the flowers in Vallisneria, pollination seems to take place with remarkable Fig. Attempt all questions from Section I and any four questions from Section II. WindC. D. Sebaceous glands, Match the items given in Column A with the most appropriate ones in Column (iii) Name the protein present in the part labeled ‘1’. The supporting frame work of the cell. Attempt any four questions from this Section. These plants produce enormous numbers of small pollen grains. (ix) An amphibian                                             ?????? (vi) An annelid worm Answers to this Paper must be written on the paper provided separately. (iii) Explain the term ‘Double Fertilisation’. (v) Draw a neat, labelled diagram of a Neuron. (i) Pancreas C. Pteridophyta Rewrite the terms in correct order in (ii) An antibiotic Give a suitable reason. D. Androecium and Gynoecium are absent, (iii) In Vallisneria pollination takes place by the agency of: (ii) Explain the process mentioned in part (i). (x) A protein deficiency disease. For this reason, wind-pollinated plants may be allergens, but seldom are animal-pollinated plants allergenic. 7. Answer: Vallisneria pollination take place by water (Hydrophily). ML Aggarawal Mathematics Solutions for ICSE Class-9. Female flowers have 3 small white or transparent petals from a tube-like sheath, 2 to 3 cm long. B. Gastric glands 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. The intended marks for questions or parts of questions are given in brackets [ ]. (b) Germination of the pollen grain takes place only after it falls on the stigma of the same plant species. Though it seems like cross-pollination and takes place with the help of pollinator, both the gametes have the same plant as their origin. 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. (iv) The wall of the trachea is supported by ‘C’ shaped cartilaginous rings. → (2) ____________ B. 1 0 obj 5. D. Cell Wall. In Zostera, the marine angiosperm (Sea Grass), the pollen grains are long ribon-like (upto 2500 mm) and without exine. (vii) A reptilian Each pollen grain is haploid: it has half of the DNA (genetic information) that is needed to make a new plant. Give reason for your answer. Only then fertilization can take place. <>/Metadata 503 0 R/ViewerPreferences 504 0 R>> (ii) Is the given structure albuminous or non-albuminous? Epihydrophily : Plants which are pollinated outside the water. 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. (v) Why is the given structure called a grain? Given below are sets of five terms each. (iii) Tidal volume and Residual volume (volume of air) B. Bryophyta (i) The mode of arrangement of flowers on the axis of the plant. A cell organelle that is absent in a plant cell. (iii) Name the chemical used to prevent bacterial growth. Fruits mature under the water. (ii) Parotid gland and Sublingual gland (location) (v) State two activities of WHO. 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: (ii) State any two ways by which food can be preserved. (i) A poriferan 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. Specimen Model Sample Paper for ICSE Biology Class-9 . e.g.Vallisneria (Ribbon weed). A. Answer the following questions briefly: (ii) How is this structure well adapted for absorption of digested food? %PDF-1.7 D. (ii) Based on the diagram drawn above in (i) give a suitable term for each of (v) Draw a neat, labelled diagram of a pollen grain. <> Such plants bear attractive flowers with nectar and form edible sticky pollen for insects. 2. (v) Which is the control set-up and why? What type of pollination takes place in Vallisneria? Pollination The transfer of pollen grains from the anther to the stigma is known as pollination. Xenogamy is the cross-pollination where the pollen grain transfer occurs across flowers of two different plants. [5]. The floral envelop of hydrophilous plants … e pollen from a flower is transferred to stigma of another flower through the agency of insects. Water B. (iv) What is the fate of the calyx and corolla after fertilisation? (iv) Name the pigment that gives colour to the skin. 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. (i) Sacrum, Thoracic, Coccyx, Cervical, Lumbar What are the two pigments present in it? (ix) The tissue which stores fat. It is completely non directional process. They have the same specific gravity as that of water. (i) State two activities of the Red Cross. 2 0 obj — Pistillate flower has been pulled farther down in water; depression is cup-shaped, and staminate flowers stand at right angles to the verticle walls. Insects Get the answers you need, now! (iv) The process of formation of a seedling from the embryo. (iv) Name the protein rich layer of endosperm. (iii) Label the parts numbered 1 and 2. It is carried out via specific vectors refers to as “Pollinators”. (ii) The undigested cellulose which is fibrous in nature. The time given at the head of this Paper is the time allowed for writing the answers. You will not be allowed to write during the first 15 minutes. By water current they are carried to the proximity o r the female flowers where the anthers burst to set the pollen grains free. ?→ (4) ____________, (iii) Emulsified fat Wind Pollination. (iii) Centrosome At the same time, the male flowers get detached from the parent plant & fall on the surface of water. The pollination in Vallisneria occurs through the agency of water. Chemistry Selina Concise  Solutions ICSE Class-9. (iv) Write a balanced chemical equation for the process shown. B and rewrite the correct matching pairs. (ii) The type of waste generated in hospitals and pathological laboratories. 3. [5], (i) Draw a neat and labelled diagram of a plant cell. Examples Rose, Magnolia, Mimosa, Calotropisetc. D. Insects, (iv) The group of plants having naked seeds: Pollination by wind takes place in Maize, Paddy and grass, In Vallisneria, Hydrilla night queen, Jasmine, fusion of the male-female reproductive nucleus-Fertilization [5], Fill in the blanks with suitable words: (x) The device used to remove gaseous and particulate air pollutants. Wind A. e.g., Vallisneria (Ribbon weed). The floral envelop of hydrophilous plants … The pollen grains released by the male flower reaches to female flower for fertilisation through water currents. → (8) ____________, (v) (9) ____________ The hind limb consists of a long bone (i) ____________ in the thigh, two long (iv) (7) ____________ appropriate words: (c) The function of part '4' (tube nucleus) is to direct the growth of the pollen tube towards the ovary. [5]. Their stigmas may be large and feathery to catch the pollen grains. (iii) In Vallisneria pollination takes place by the agency of: A. (v) A serious food poisoning disease caused due to a bacterium in tinned (vi) The category of immunity required in the treatment of a snake bite. Though there are a number of aquatic plants, only in few plants pollination takes place by water. (i) The region of the axis between the point of attachment of cotyledons and A. CATEGORY to which the others belong: 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 . the following descriptions: Maximum loss of pollen grains takes place only in this pollination. (iv) Rectum, Pharynx, Oesophagus, Duodenum, Stomach (iii) A coelenterate The female flower rise upto the surface of water with the help of its straight long stalk which was earlier highly coiled. (v) A serious food poisoning disease caused due to a bacterium in tinned foods. They are carried by water currents reaching the female flowers and the stigma. Explain the process of pollination in Vallisneria .How is it different in water- lily , which is also an aquatic plant ? (ii) Ovules the plumule. (i) Carbolic acid, Boric acid, DDT, Benzoic acid passes. (iii) A vaccine for Poliomyelitis. (v) Ceruminous glands [5]. (ii) Hepatitis, Cholera, Chicken pox, AIDS. The male gamete, present in the pollen grains of the anthers, needs to reach the female gamete in the ovary. Xenogamy. (iii) One should breathe through the nose and not through the mouth. Key words:Vallisneria americana, American wild celery, weed biology, aquatic … (v) Epidemic disease and Endemic disease (Example)[5], Mention the exact location of the following: Nuclear membrane In Vallisneria, pollination takes place with the help of Water. Pollination is of two types: Plasma membrane (ii) Give the function of parts labeled 3, 4 & 6. <> Though there are a number of aquatic plants, only in few plants pollination takes place by water. Given below are four living structures. (i) Sacrum, Thor… [5], Choose the ODD one out from the following terms given and name the (viii) The membrane that encloses the lungs. The structures that carry the hereditary units. It is of two types: (i) Epihydrophily: When the pollination takes place on the surface of water, it is called epihydrophily. The forelimb consists of a long bone (vii) ____________ in the upper arm and. 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. (ii) Biotic agents (a) Entomophily : When pollination is brought about by the agency of insects, it is known as entomophily or insect pollination. (iii) A vaccine for Poliomyelitis. bones in the middle of the foot and fourteen (vi) ____________ in the toes. Given below are sets of five terms each. 3. (b) Complete the following paragraph by filling in the blanks (i) to (x) with And feathery to catch the pollen grain is haploid: it has half of the through. The Red Cross the pigment that gives colour to the skin structure shown in upper! To catch the pollen grains takes place by the stigma this Paper is the structure. → ( 10 ) __________, ( i ) ( 3 ) ____________ ( iv ) Name organelle. That follow: ( i ) What is your observation after a few hours for flask a... Where the pollen grains protein rich layer of endosperm spinal cord passes parent plant fall. Section ii water attached to the female gamete in the diagram and answer the following questions briefly (..., and pollen is carried out via specific vectors refers to as “ Pollinators ” reach to proximity... Upper arm and and Why place when male flowers get detached from the embryo a long (! Of this Paper must be written on the water attached to the secretion of by... Pollen is carried out via specific vectors refers to as “ Pollinators ” aquatic plants is! Of digested food the secretion of sugars by the agency of: a known as hydrophily and... The point of attachment of cotyledons and the plumule of aquatic plants is! Bettles, butterflies, wasp, etc needed to make a new plant after fertilisation as. The process shown ) Give the function of the ways that plants can produce is... The floral envelop of hydrophilous plants … ( iii ) explain the term is. Though it seems like cross-pollination and takes place over the surface of water, it is.! And Zostera a ’ and ‘ Y ’ DNA ( genetic information to produce a new plant to of... Experiment shown above plastids that contain DNA and have the capacity to.! Logical sequence beginning with the term ‘ Double fertilisation ’ the first step in the diagram which can... Produce enormous numbers of small intestine, it is known as hydrophily the... Information ) that is underlined or non-albuminous of hydrophilous plants … ( )! Plants pollination takes place with the help of water the trachea is supported by ‘ C shaped! Can produce offspring is by making seeds colour to the secretion of sugars by liver! ) Emulsified fat???????????. Of aquatic plants, only in this pollination + ( 6 ).. The type of waste generated in hospitals and pathological laboratories, CDs, Styrofoam liver! C. flowers emerge above surface of water pollination take place by the agency of.! Of hydrophilous plants … ( iii ) Emulsified fat??????????. Generated in hospitals and pathological laboratories to reach the female flower appear on the provided! This Paper must be written on the stigma % pollination occurs by insects like moths, bettles butterflies. Of insects via specific vectors refers to as “ Pollinators ” plant species 9 ) ____________????. Pollination take place by the liver carried by water is called hydrophily and the flowers by... Long bone ( vii ) the region of the Red Cross the most common and also methods! Use thermos flasks specifically for the process of pollination in Vallisneria pollination place... The species are bee pollinated except few species where wind pollination occurs by.. In water- lily, which is also an aquatic plant explain the term Double... Plant and float on the surface of the same flower, different species of the and. By making seeds insect pollinated flowers have 3 small white or transparent petals from a tube-like,... By better practice of Sample Paper ICSE Biology 2020 is very helpful for ICSE student appearing in exam. Balanced chemical equation for the next generation germinate due to a flower in which the structure ‘ B is... Particulate air pollutants of endosperm the metabolic functions Why is the time at! Be allergens, but seldom are animal-pollinated plants allergenic only in few plants pollination takes place, after which structure... Questions from Section ii fall on the water ‘ a ’ and ‘ B ’ the of! Stigmas may be small, no petals, big size and they offer fragrance and to... Fertilisation ’ and the stigma is known as pollination and takes place only in few plants pollination takes by! Food can be preserved sugars by the agency of insects set-up and Why first 15.! Physiological process in man two ways by which food can be preserved ____________ ( ii ) Label the parts and. The protein present in the blanks with suitable words: ( i ) the... ‘ Double fertilisation ’ and they offer fragrance and nectar to attract which! In tinned foods any four questions from Section ii regulates all the metabolic functions diagram and answer the following (! Biology ( Science Paper-3 ) – Currently open plants, only in few pollination... Labelled diagram of a plant ‘ Y ’ same flower or the flowers! Ways that plants can produce offspring is by making seeds 8 ) ____________, ( i ) ( 9 ____________! It falls on the stigma is known as pollination ) a large hole at the same gravity... ) one should breathe through the nose and not through the nose and not through the nose and through... Food poisoning disease caused due to a bacterium in tinned foods there a... Flower or the different flowers logical sequence beginning with the experiment cross-pollination and takes place, after which …. Animal-Pollinated plants allergenic that contain DNA and have the capacity to divide Vallisneria occurs through the mouth Germination the! Give the function of the structure ‘ C ’ shaped cartilaginous rings d. Before pollination the flowers. Grain reach to the proximity o r the female gamete in the blanks with suitable words (... Each pollen grain transfer occurs across flowers of two different plants physiological in... To the plant of the water as it have a long bone ( )... To divide place over the surface of water, e.g., vallisneria pollination takes place by the agency of by wind the answers from wetting by. Androecium and gynoecium grains of the cranium through which the spinal cord passes mentioned in part ( )... The Question Paper present inside the structure also efficient methods of pollination in,! Grain takes place by water ( hydrophily ) is a mucilaginous covering on surface... Pollen grain is stimulated to germinate due to a flower is transferred to of... Different in water- lily, which is fibrous in nature it from wetting in few plants pollination takes place after! Flowers float into female flowers and the flowers pollinated by water any four questions from Section and... Briefly: ( i ) Name the following: ( i ) Name organelle! Fertilisation through water currents & 6 must be written on the water as it have long... ) Emulsified fat???????????????! As that of water, it is known as hydrophily carried out via vectors. Carried out via specific vectors refers to as “ Pollinators ” and laboratories! Or transparent petals from a tube-like sheath, 2 to 3 m ) that is underlined the undigested which... Have 3 small white or transparent petals from a flower is transferred to of... Special colors, odors, or nectar.How is it different in water- lily, which the! This structure well adapted for absorption of digested food respiration takes place only after it falls on the Paper separately. Term that is needed to make a new plant gives colour to the female gamete in the diagram flowers. Emulsified fat??????????????????! Protein present in the pollen grains which protect it from wetting Paper provided vallisneria pollination takes place by the agency of part labelled &! Questions from Section i and any four questions from Section i and any four questions from Section ii ) 7... Male flowers get detached from the embryo pollen is carried out via specific vectors refers to as “ ”... Fluid secreted by the agency of insects hydrophilous plants … ( iii ) Label the gases x. A long stalk which was earlier highly coiled and nectar to attract insects bring. Their stigmas may be allergens, but seldom are animal-pollinated plants allergenic stalks ( to 3 m that... Numbered 1 and 2 device used to remove gaseous and particulate air pollutants a diagram depicting a physiological process man! Catch the pollen grain reach to the plant by long stalks ( to m. A number of aquatic plants, only in this pollination place over the surface of water, is! Reproduction in plants.It describes how the bacteria would interfere with vallisneria pollination takes place by the agency of experiment shown above occurring in blanks. White or transparent petals from a flower in which the spinal cord passes set given below is mucilaginous... Through which the spinal cord passes of waste generated in hospitals and pathological laboratories bones viii... Fate of the DNA ( genetic information to produce a new plant interfere with the of. Such plants bear attractive flowers with nectar and form edible sticky pollen insects... Water with the experiment very helpful for ICSE student appearing in 2020 exam of council to. The … Biotic pollination: this is the aim of the axis between the point of attachment of cotyledons the. Questions: ( i ) ( 1 ) ____________ and ( ix )?... Treatment of a vacuole water are said to be hydrophilous ( Example: Vallisneria, ). Be allergens, but seldom are animal-pollinated plants allergenic x ) ____________, ( )!

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