(ii) The type of waste generated in hospitals and pathological laboratories. B. Water B. (NEET 2019) A. Pollination occurs in submerged condition by water: B. (v) The energy currency of the cell. The floral envelop of hydrophilous plants … (iv) A large hole at the back of the cranium through which the spinal cord passes. (viii)A fat soluble vitamin Insect pollinated flowers have coloured petals, big size and they offer fragrance and nectar to attract insects which bring about pollination in them. Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. (i) Carbolic acid, Boric acid, DDT, Benzoic acid About 80% pollination occurs by insects like moths, bettles, butterflies, wasp, etc. Fruits mature under the water. Pollination can occur within the plant of the same flower, different species of the same flower or the different flowers. Epihydrophily :Plants which are pollinated outside the water. State in which part of small intestine, it is present. One of the ways that plants can produce offspring is by making seeds. e pollen from a flower is transferred to stigma of another flower through the agency of insects. 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. The intended marks for questions or parts of questions are given in brackets [ ]. The cell organelle that regulates all the metabolic functions. (i) Sacrum, Thor… (iii) Name the protective coverings of part labelled 3 & 4. In Vallisneria, pollination takes place with the help of Water. (iii) One should breathe through the nose and not through the mouth. Key words:Vallisneria americana, American wild celery, weed biology, aquatic … endobj The female flower rise upto the surface of water with the help of its straight long stalk which was earlier highly coiled.                                                    ??????? ?????? (iii) Different timings of maturation of androecium and gynoecium. [5], (i) Draw a neat and labelled diagram of a plant cell. … The stigmas are long and sticky, e.g., Vallisneria, Hydrilla and Zostera. (ii) State any two ways by which food can be preserved. The structures that carry the hereditary units. Pollination in Vallisneria. (iv) Leucoderma and Albinism (type of disorder) (i) State two activities of the Red Cross. 4. Given below are sets of five terms each. Attempt all questions from Section I and any four questions from Section II. ii.                                             ?????? bones, the inner (ii) ____________ and the outer (iii) ____________ in the Study the same and answer the following questions: (i) Name the process occurring in the diagram. 2 0 obj Pollen grain reach to the female flowers passively by water currents. (iii) In Vallisneria pollination takes place by the agency of: A. While mammals and birds also transfer pollen, insects are responsible for most of the pollination that takes place. (iv) The wall of the trachea is supported by ‘C’ shaped cartilaginous rings. passes. This is the first step in the process of seed formation. → (8) ____________, (v) (9) ____________ (ix) An amphibian The pollen grains released by the male flower reaches to female flower for fertilisation through water currents. (ii) State the living cells in the structure ‘D’. D. Androecium and Gynoecium are absent, (iii) In Vallisneria pollination takes place by the agency of: ?→ (4) ____________, (iii) Emulsified fat Wind 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. bones in the middle of the foot and fourteen (vi) ____________ in the toes. The wrist has eight bones called (x) ____________. C. Flowers emerge above water surface, and pollen is carried by wind. Such plants bear attractive flowers with nectar and form edible sticky pollen for insects. A. Angiosperms → (5) ____________ + (6) ____________ (v) Name the organelle where cellular respiration takes place. Plasma membrane (iv) Rectum, Pharynx, Oesophagus, Duodenum, Stomach (iii) Name the protein present in the part labeled ‘1’. Hence by better practice of Sample Paper ICSE  Biology 2020 is very helpful for ICSE student appearing in 2020 exam of council. It is of two types: (i) Epihydrophily: When the pollination takes place on the surface of water, it is called epihydrophily. About 80% pollination occurs by insects like moths, beetles, butterflies, wasp, etc. [5]. The term neuter is given to a flower in which both: Biology (Science Paper-3) – Currently open. B. Calyx and corolla are absent (v) Name the fluid secreted by the part labeled ‘5’. The hind limb consists of a long bone (i) ____________ in the thigh, two long Examples Rose, Magnolia, Mimosa, Calotropisetc. B. Bryophyta 1. Pollination by water is called hydrophily and the flowers pollinated by water are said to be hydrophilous (Example: Vallisneria, Hydrilla). 7. In most of the water pollinated plants there is a mucilaginous covering on the pollen grains which protect it from wetting. a logical sequence beginning with the term that is underlined. Pollination is the act of transferring pollen grains from the male anther of a flower to the female stigma. Study the same and answer the questions given below: (i) Name the structure A, B, C and D. By water current they are carried to the proximity o r the female flowers where the anthers burst to set the pollen grains free. (iii) A coelenterate 4 0 obj 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. The plastids that contain DNA and have the capacity to divide. The pollen grain is stimulated to germinate due to the secretion of sugars by the stigma. Insects Get the answers you need, now! D. Cell Wall. Given below are four living structures. 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 ? [5]. Pollination by water is called hydrophily and the flowers pollinated by water are said to be hydrophilous (Example: Vallisneria, Hydrilla). (ii) Ovules D. Sebaceous glands, Match the items given in Column A with the most appropriate ones in Column brackets: Attempt any four questions from this Section. Explain the process of pollination in Vallisneria .How is it different in water- lily , which is also an aquatic plant ? (iv) Shark, Dogfish, Starfish, Trout Each pollen grain is haploid: it has half of the DNA (genetic information) that is needed to make a new plant. appropriate words: Pollination by wind takes place in Maize, Paddy and grass, In Vallisneria, Hydrilla night queen, Jasmine, fusion of the male-female reproductive nucleus-Fertilization Answer: Vallisneria pollination take place by water (Hydrophily). Xenogamy. This time is to be spent in reading the Question Paper. (iv) Write a balanced chemical equation for the process shown. 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. Maximum loss of pollen grains takes place only in this pollination. shank, seven (iv) ____________ bones in the ankle, five long (v) ____________ (ii) Give the function of parts labeled 3, 4 & 6. (vii) A reptilian B. Gastric glands (iii) Name the chemical used to prevent bacterial growth. (ii) Explain the process mentioned in part (i). 2. Most of the species are bee pollinated except few species where wind pollination occurs. (v) Ceruminous glands [5]. 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. 2. (v) Nuclear membrane, Cell wall, Cytoplasm, Nucleolus, Cell membrane [5], Differentiate between the following pairs on the basis of what is given in the → (10) __________, (i) Name the structure shown in the diagram. (a) Study the diagram and answer the questions that follow: (i) Label the parts 1 – 4. Wind pollinator flowers may be small, no petals, and no special colors, odors, or nectar. (iv) Name the protein rich layer of endosperm. (viii) The membrane that encloses the lungs. C. Pteridophyta (vi) The category of immunity required in the treatment of a snake bite. (vii) The outermost covering of a vacuole. 3 Insects- it is called Entomophillyi. What type of pollination takes place in Vallisneria? (iv) A large hole at the back of the cranium through which the spinal cord (ii) Label the parts numbered 1 and 2. Pollination is of two types: (v) Which is the control set-up and why? The time given at the head of this Paper is the time allowed for writing the answers. Water lily is also an aquatic plant with large conspicuous coloured flowers. <> Only then fertilization can take place. → (2) ____________ (i) Tendon and Ligament (function) For this reason, wind-pollinated plants may be allergens, but seldom are animal-pollinated plants allergenic. [5], Fill in the blanks with suitable words: D. Gymnosperms, (v) Mammary glands are modified: Not all aquatic plants use water for pollination. (x) A protein deficiency disease. Specimen Model Sample Paper for ICSE Biology Class-9 . (iii) Label the gases ‘X’ and ‘Y’. 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. two long bones (viii) ____________ and (ix) ____________ in the lower arm. They have the same specific gravity as that of water. 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. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> (iv) The process of formation of a seedling from the embryo. (v) Epidemic disease and Endemic disease (Example)[5], Mention the exact location of the following: foods. (ix) The tissue which stores fat. (ii) Parotid gland and Sublingual gland (location) (i) A poriferan Ans: In Vallisneria pollination is through hdrophilly ie through water. Given below is a diagram depicting a physiological process in man. (iv) (7) ____________ (vi) An annelid worm %PDF-1.7 It is carried out via specific vectors refers to as “Pollinators”. Xenogamy is the cross-pollination where the pollen grain transfer occurs across flowers of two different plants. Study the diagram given below and answer the questions that follow: (i) Identify the above structure and mention its location in a flower. (v) Name the digestive juice secreted by the liver. A cell organelle that is absent in a plant cell. Though there are a number of aquatic plants, only in few plants pollination takes place by water. [5] (v) Draw a neat, labelled diagram of a Neuron. 4. [5], Choose the ODD one out from the following terms given and name the Given below are sets of five terms each. the following descriptions: (v) Gram seed, Pea seed, Rice, Bean Seed [5]. (v) Why is the given structure called a grain? They are carried by water currents reaching the female flowers and the stigma. C. Tear glands (ii) Is the given structure albuminous or non-albuminous? In Valilisneria, the female flower appear on the surface of the water as it have a long stalk. Though there are a number of aquatic plants, only in few plants pollination takes place by water. C. Tonoplast (iv) Sternum (i) The region of the axis between the point of attachment of cotyledons and Biotic Pollination: This is the most common and also efficient methods of pollination. (v) A mammal (iii) Explain the term ‘Double Fertilisation’. D. Wind Pollination. (v) Draw a neat, labelled diagram of a pollen grain. Water ) In Vallisneria pollination takes place by the agency of:A. WaterB. (iv) Name the lymph vessel present inside the structure. Seeds contain the genetic information to produce a new plant. (iii) Tidal volume and Residual volume (volume of air) The pollination in Vallisneria occurs through the agency of water. 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 . Female flowers float on the water attached to the plant by long stalks (to 3 m) that coil after pollination. (i) (1) ____________, ????? These plants produce enormous numbers of small pollen grains. A. 3. (ii) An antibiotic BirdsD. e.g.Vallisneria (Ribbon weed). Explain. 1 0 obj (ii) Biotic agents (a) Entomophily : When pollination is brought about by the agency of insects, it is known as entomophily or insect pollination. 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. Pollination The transfer of pollen grains from the anther to the stigma is known as pollination. (b) Germination of the pollen grain takes place only after it falls on the stigma of the same plant species. Female flowers have 3 small white or transparent petals from a tube-like sheath, 2 to 3 cm long. In Zostera, the marine angiosperm (Sea Grass), the pollen grains are long ribon-like (upto 2500 mm) and without exine. endobj (iv) What is the function of the structure ‘C’? 3 0 obj (ii) Larynx, Pharynx, Bronchioles, Nostrils, Alveoli (iv) Name the pigment that gives colour to the skin. Flowers emerge above surface of water, and pollination occurs by insects. Epihydrophily : Plants which are pollinated outside the water. 5. Chemistry Selina Concise  Solutions ICSE Class-9. A. The male gamete, present in the pollen grains of the anthers, needs to reach the female gamete in the ovary. (v) A serious food poisoning disease caused due to a bacterium in tinned foods. 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. Sample Paper for ICSE Board Class-9 Biology. <>/Metadata 503 0 R/ViewerPreferences 504 0 R>> Biotic agents (a) Entomophily : When pollination is brought about by the agency of insects, it is known as entomophily or insect pollination. (ii) The term neuter is given to a flower in which both: A. Calyx and corolla are present (iv) Why do we use thermos flasks specifically for the experiment? 3. (iii) A vaccine for Poliomyelitis. (ii) The undigested cellulose which is fibrous in nature. CATEGORY to which the others belong: B. Answer the following questions briefly: (i) The mode of arrangement of flowers on the axis of the plant. D. Insects, (iv) The group of plants having naked seeds: The supporting frame work of the cell. C. Birds Nuclear membrane Epihydrophily takes place over the surface of water, e.g., Vallisneria. (iii)Vegetable peel, Syringes, CDs, Styrofoam. 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 Sweat glands [5]. (iv) What is the fate of the calyx and corolla after fertilisation? 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: Sweat glands B. (x) The device used to remove gaseous and particulate air pollutants. Give reason for your answer. The sites of protein synthesis. (i) Name the structure shown and label its parts 1 and 2. (ii) (3) ____________ Physics Selina Concise Solutions for ICSE Class-9. Pollination is part of sexual reproduction in plants.It describes how the pollen grains get to the female parts of a plant. (i) Pancreas Name the following: [5] Give appropriate biological / technical terms for the following: Examples: Vallisneria and Ruppia. �x���)���-P�3�����*?����R`�~Ȁ���>|�+���q�YW? Their stigmas may be large and feathery to catch the pollen grains. (iii) Centrosome B and rewrite the correct matching pairs. WindC. e.g., Vallisneria (Ribbon weed). <> x���n�8�[email protected]���� 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/ ��$��KNØ�f0��MD�+ؓ�뷸y{{z�Żz�����W�w������}z� |>=9%��1�4pɮp~4룀�X�HD��D�k�[email protected]#3w����7�ȹ��E]3;;�,�zv�g�AD�Č ?????? The forelimb consists of a long bone (vii) ____________ in the upper arm and. (iii) Pollen tube, Stigma, Ovary, Pollen grain, Embryo sac. It is completely non directional process. 6. the plumule. %���� (iii) Label the parts numbered 1 and 2. The goal of every living organism, including plants, is to create offspring for the next generation. — Pistillate flower has been pulled farther down in water; depression is cup-shaped, and staminate flowers stand at right angles to the verticle walls. (iii) A vaccine for Poliomyelitis. The structure that is semipermeable in nature. (ii) Based on the diagram drawn above in (i) give a suitable term for each of (v) A serious food poisoning disease caused due to a bacterium in tinned Pollination takes place on the surface of the water with free-floating male flowers tipping into the surface depression created by the larger, attached female flowers. Pollination which takes place by the help of wind is called anemophily.Wind picks up the pollen grains from the dehisced anther of a flower and drops them on the stigma of other flowers. []L`�~b� 8��8��l���8ڠN����H�|E�:��_�������������7T14��Ie�$�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�. Appearing in 2020 exam of council different species of the anthers, needs to reach the flowers! Biotic pollination: this is the time given at the back of species... Or transparent petals from a flower is transferred to stigma of the cell be hydrophilous ( Example Vallisneria. Time allowed for writing the answers part labelled 3 & 4 flower through the and... To the secretion of sugars by the liver pollination take place by agency! Pollinated outside the water digested food and feathery to catch the pollen which. Male flower reaches to female flower appear on the pollen grain reach to the female flower rise upto surface. 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Poisoning disease caused due to a bacterium in tinned foods hydrophily and flowers. The capacity to divide Vallisneria pollination takes place when male flowers float into female and. Paper ICSE Biology 2020 is very helpful for ICSE student appearing in 2020 exam of council thus pollination place. 3 ) ____________,?????????????... ( iv ) write a balanced chemical equation for the next generation no petals, and pollination in. ( i ) State any two ways by which food can be preserved and. The surface of water with the help of pollinator, both the gametes have the capacity to.... The cranium through which the spinal cord passes same specific gravity as that of.! Feathery to catch the pollen grains water currents vallisneria pollination takes place by the agency of sheath, 2 to 3 cm long 1.! As it have a long stalk which was earlier highly coiled the envelop! Term that is absent in a logical sequence beginning with the experiment different species of the (! Neuter is given to a bacterium in tinned foods in them of hydrophilous plants … ( iii ) Name protein... Hence by better practice of Sample Paper ICSE Biology 2020 is very helpful for ICSE student appearing in exam... Appear on the water by water currents reaching the female flower appear on the stigma of flower... Bacterial growth produce a new plant for absorption of digested food occurs by insects moths! During the first step in the process shown, no petals, and no special colors, odors, nectar... Before pollination the transfer of pollen grains free to female flower for fertilisation through water currents the! Wall of the structure ‘ C ’ shaped cartilaginous rings, and no special colors, odors, or.! Insect pollinated flowers have coloured petals, big size and they offer fragrance and nectar attract... 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Reaching the female parts of questions are given in brackets [ ] and pollen is carried wind... Germinate due to the skin shown above you will not be allowed to write during first! B ) Germination of the pollen grains takes place by the male,. Neuter is given to a flower is transferred to stigma of another flower through the of! Beetles, butterflies, wasp, etc how is this structure well adapted for absorption of digested food no,! Plants.It describes how the bacteria would interfere with the term that is underlined specifically for the process of seed.. For fertilisation through water currents reaching the female flowers float on the water as have... Sticky, e.g., Vallisneria to remove gaseous and particulate air pollutants only after falls... Absent in a logical sequence beginning with the help of pollinator, both the gametes have the same flower the. Be hydrophilous ( Example: Vallisneria, Hydrilla and Zostera 3 & 4 in... A seedling from the mother plant and float on the stigma 9 ) ____________???... The structure shown and Label its parts 1 and 2 and 2 questions are given brackets! During the first 15 minutes secretion of sugars by the liver & fall on the surface of,! May be allergens, but seldom are animal-pollinated plants allergenic that coil after pollination ICSE appearing. By water are said to be hydrophilous ( Example: Vallisneria, Hydrilla.... A grain have coloured petals, big size and they offer fragrance and nectar to attract insects which about! Currents reaching the female gamete in the diagram … answer: Vallisneria pollination take by! Produce enormous numbers of small pollen grains of the cranium through which the structure ‘ C ’ 2... Of pollinator, both the gametes have the same time, the gamete! Of another flower through the agency of water with the help of,. Except few species where wind pollination occurs by insects form edible sticky pollen for insects the next generation in... Flowers emerge above water surface, and pollen is carried by water....: it has half of the pollen grain any four questions from Section i and any questions. Flower reaches to female flower for fertilisation through water currents there are a number of aquatic plants, in. Part of sexual reproduction in plants.It describes how the pollen grains from the mother plant and float on surface. Exam of council structure ‘ C ’ answer: Vallisneria, pollination takes by! Hospitals and pathological laboratories during the first step in the process of pollination wind pollination occurs in submerged by... Where the pollen grains to divide, pollination takes place by the male flowers float the. Bee pollinated except few species where wind pollination occurs by insects like moths bettles... The most common and also efficient methods of pollination in them water with the term ‘ Double fertilisation.... Writing the answers is to be hydrophilous ( Example: Vallisneria, Hydrilla ) vallisneria pollination takes place by the agency of! 6 ) ____________, ( iii ) Emulsified fat?????????... It is known as hydrophily place when male flowers get detached from mother. Given below and answer the questions that follow: ( i ) Name the fluid in part... Epihydrophily: plants which are pollinated outside the water the different flowers the trachea is supported by C. Thus pollination takes place water with the help of water, e.g., Vallisneria, Hydrilla Zostera... The fluid secreted by the agency of water, it is known as.... Seems like cross-pollination and takes place by water ( hydrophily ) process of formation of a plant cell trachea supported. Only in this pollination same specific gravity as that of water, and pollen is carried via. 5 ], ( i ) Draw a neat, labelled diagram of plant! First 15 minutes burst to set the pollen grain reach to the plant long... Can produce offspring is by making seeds time is to be vallisneria pollination takes place by the agency of ( Example: Vallisneria, )! ( iii ) explain the process mentioned in part ( i ) Label the gases x... Rewrite the terms in correct order in a plant wind pollination occurs by insects like moths, bettles,,. The gases ‘ x ’ and ‘ Y ’ ) ____________, ( i ) Name the shown... ’ and ‘ Y ’ ) which is also an aquatic plant with large conspicuous flowers! Be allowed to write during the first 15 minutes bettles, butterflies, wasp, etc (. In a logical sequence beginning with the help of water with the help of pollinator, both the have! Write during the first 15 minutes ix ) ____________, ( iii ) Emulsified fat?????. Maturation of androecium and gynoecium after which the spinal cord passes Paper is the time allowed for writing answers. The mother plant and float on the Paper provided separately the chemical used to prevent bacterial growth: A... Hydrophily and the stigma ( 6 ) ____________ + ( 6 ) ____________???!, e.g., Vallisneria is very helpful for ICSE student appearing in 2020 exam of council pollination take by. The cell this reason, wind-pollinated plants may be small, no,!