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Chapln-1, , Chapter, , Plants, as-, , 2, , S, , Plants are very useful to us in many ways. Being a living thing, like all other living things,, plants also reproduce to maintain the existence of their species. Plants reproduce in a, , number of ways:, , (), , From, , their, , Keprolurlmn a, body parts (ye geidtivt, , Sasds, propagatwn ) Ku»t, Stam, laares, , (ii) Fronm spores, , -, , (ii) From seeds, , Reproduction through Body Parts, Some new plants grow from the parts of the mother plants. They grow from roots, steem, and leaf. Such type of reproduction is known as vegetative propagation., , Root, A sweet potato is a swollen root of the plant. The new plant of sweet potato can be, , grown from the roots of the original plant., , Sweet Potato, , Carrot, , Stem, Some plants can reproduce by burying a part of stem in the soil. From stem cutting,, new, , shoots grow from buds. For, , example,, , Sugarcane, rose plant, , Sugarcane plant, , Rose plant

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IINI CN, , Underground Stem, , Underground, will grow, , on, , stems, , like potato and, , planting them, , ginger have, , buds, , on, , them from where new sho., , 10ots, , in the soil., , Potato, , Onion, Similarly, some plants like onions and lilies grow from their bulb shaped stems., Leaves, In, , Bryophyllum, new plant grows from their leaves, , Spores, , Begonia, , Bryophyllum, , The plants like ferns,, mushrooms or mosses, which, which can be, grown into a new plant., , bearing plants, , plants grow from, 24, , have, , flowers, produce spores, , Mushroom, , Seeds, The fruit, , do not, , CLASS-5, , have seeds inside fruit., , them. For, example,, , When these seeds, fall, , on, , the, , soil,, , new

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PLANTS, , CHAPTER-2, , Mango, rice,, , wheat and tomato, etc., , Tomato, , Mango, Parts of Seed, , Seed has, may be, , an, , upper, , one or two, , covering, , there, which is called seed coat. Inside the seed coat,, , seed leaves called, , cotyledons., , Between, , them, baby plant grows, , into root, growing downwards that develops, that develops into shoot. Food, and plumule growing upwards towards the sunlight, Number of cotyledons also varies, for the baby plant is stored in the cotyledons., have only one cotyledon and are monocot, from plant to plant. Maize, wheat and rice, and are dicot plants., plants. Pea and beans have two cotyledons, a seed is called germination., The process by which baby plant grows from, when it gets, air. A seedling grows into plant, A seed needs water, sunlight and, and air., sufticient water and food from soil, sunlight, , called seedling., , Seedling, , has radicle, , FoRageeaves, , Epicoty, , Hypocoty, , Cotyie don, , Cotyledo, , Hypocoy, , Radicle, , Germination of seed, , Dispersal of Seeds, , help, , seeds with the, Plants have to disperse their, not, , fall, , on one, , place causing, , dispersed by wind, water,, , of, , nature so, , that all seeds would, , to grow. Seeds are, sunlight, water and space, of, and explosion of fruits. These all are agents, , lack of, , animals, , dispersal., Wind, The seeds which, Wind. Seeds of, , are, , light and, , cotton, , have, , wings, , or, , hairs, , on, , them, , are, , easily, , carried, , by, , and madar have hairs., , CLASS-525

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OLYMPIAD, , OF SCIENCE, , INTERNATIONAL, , Madar seed, , Cotton seed, , Water, carried to different places by flowing water., Coconut is very light in weight as it is hallow from inside so that it does not sink, , Seeds, , are, , when it falls into water. It floats for several months in sea before reaching land., , Coconut, , Animals, , Water Lily, , Seeds of mango, apple, etc. are thrown, by human beings and animals after eating. Some, seeds have stiff hair which, cling to bodies of animals or feathers of birds or our clothes, and carried away from one, to another., , place, , Mango seed, , Explosioon, The fruits of some, the seeds to scatter, , Apple seed, , plants, like pea on drying explode, suddenly. This explosion causes, away from the mother plant. For, example, pea plant and bean plant., , Pea seeds, , Bean seeds

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CHAPTER-2, , PLANTS, , Food from Plants, The, , growth of, , which grow, , in, , diferent crops, winter from, , crops are wheat and gram., , depends on different seasons, climate and soil. The crops, november to april are called rabi, crops. Examples of rabi, , Wheat, , Gram, , The crops which grow in summer from june to october, maize and bajra are examples of kharif crops., , are, , called kharif crops. Rice,, , Maize, , Rice, , Protection of Crops, Farmers make fences around the fields to keep them safe from animals., Pests like aphids and caterpillar can damage the crops. So, it is necessary to kill, them, , by using pesticides., , For, , example, atrazine,, , alachlor., , W h e n the grain has ripened, it has to be harvested and stored. Farmers keep, insects., them safe from moisture and animals like birds, rats and, , *Fruits and, , and pulses are stored, vegetables are stored in cold storage. Dry grains, , in granaries.

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Practice Exercise, Which among the following is a dicot seed?, , AY Gram, , (B) Maize, , (D) Rice, , (C) Wheat, , (E) None of these, is/are also known, , (A) Seedling, , B, , as, , seed leaves., , Cotyledons (C) Seed coat, , (D) Stem, , (E) None of these, Which among the, , S., , (A) Potato, (E) None of these, In, , a, , plant, , like, , following plants can be grown from the roots of a plant?, (B) Ginger, Ey Sweet potato (D) Sugarcane, , mushroom,, , a new, , plant?, (A) Stem, (B) Root, (E) None of these, Which among the, , 5., , (A) Sugarcane, (E) None of these, , plant, , can, , be grown from which, part of the, , C) Spore, , (D) Leaf, , following is an underground stem?, , (B)Singer, , (C) Hibiscus, , (D) Rose, , Match the following:, Column A, i., , ii., , Dispersal, , of seed, , a., , Germination, , b., , ii. Cotyledon, iv., , Manure, , (A) (i-c), (ii -d), (ii b). (iv a), (C) (i-d), (ii a), (ii b), (iv- c), -, , -, , (A) Cabbage, , ) Bajra, (E) None of these, , is not, , d., , Part of, , seed, , seed, , a, -, , a), (ii, , -, , -, , (E) None of these, , following, , Scattering of, , d), (iv- b), (D)(i-b). (ii-c), (ii a), (iv -d), , -, , Which among the, , C., , i-c),(i, , -, , 7, , Column B, Growth of a seed, Dead and, decaying matter, , a, , rabi crop?, , (B) Cauliflower, (D) Pea

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PLANTS, , CHAPTER-2, , 8Sugarcane reproduces by, (A) Flower, (B) Root, , (E), , cutting., (C) Stem, , None of these, , The seeds, , of this, , plant, , (A) Air, , (E), , are, , (D) Leaves, , dispersed by:, , (B) Water, , (C) Explosion, , (D) Animal, , None of these, , 10. Which among the following seeds are dispersed by wind?, , A) Cotton, (E) None of, , (B) Madar, , (C) Hiptage, , these, , 11. Which among the following is a monocot seed?, (A) Peas, (B) Beans, (C) Gramn, (E) None of these, , (D) All the above, (D) Corn, , 12.-It stores the food for the growing seedling in a seed., , A) Seed coat, , (B) Shoot, , (D) Cotyledon, , (C) Underground stem, , (E), , None of these, , Which among the following can be grown from the stem of a plant?, , ACarrotof these, , (B) Radish, , (C) Turnip, , (E None, leaves in:, A new plant can be grown through, , A) Bryophyllum (B), (E, , Ferns, , (C) Ginger, , Potato, (D) Garlic, , None of these, , Which, , among the, , A) Rice, , following is, (B) Maize, , not a kharif, , crop?, , Bean, , (D) Jowar, , (E) None of these, , 6., , The eyes of, , AYLéaves, , potato, , are:, , (B) Buds, , (C) Roots, , (D) Flowers, , (E) None of these, CLASS-5, , 29

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INTERNATIONAL OLYMPIAD, , (E), , as, , rabi crops., , (D) Spring, , (C)Wigter, , (B) Autumn, , None of these, , 18.Which, , among the, , (A) Caulitlower, , 19, , also known, , s e a s o n are, , 17Crops grown in., (A) Summer, , OF SCIENCE, , following, , is grown in summer?, (D) Bean, , (C) Brinjal, , (B) Radish, , (E) None of these, Cotton plant is best grown in, (B) Loam, Black, (E) None of these, , soil., , (D) Moist, , (C) Sandy, , 20.Practice of growing plants on large scale is:, (A) Germination, , Agriculture, , (C) Insecticide, , (E), , (D) Photosynthesis, , None of these, , 21. Which among the following is a manure?, , (A) Urea, , (B) Super phosphate, , (C) Ammonium sulphate, , (D) Nitrate, , (E) None of these, , 2Which among the following is incorrect?, (A) Use healthy and ripe seeds for sowing., (B) Add manures to soil to increase production., Excessive use of fertilizers can improve the soil, (D) Irrigate the soil properly., , (E), , quality., , None of these, , 2 3 Seeds of mango are dispersed by:, , (B) Air, , (A) Wateer, , (E), 94., , None of these, , Process, , of, , scattering of, , (A) Germination, (C) Protection, (E) None of these, 25. Name the, crops which, , Animals, , seeds away from the, , ), , (D) Explosion, , parent plant:, , Dispersal, , (D) Agriculture, are, , Manch, grown from, , toJwn, , je-toroetober month in India., C, Zaaid Cops(D) Either (A), (E) NonertA*nd4u, of these, (B), (A) Rabi crops, , (B) Kharif crops, , or

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HAPTER-2, , 6.By which of the following ways crops cannot be protected?, , (A), (B), , Use of insecticides., Use of, , pesticides, , C) Allowing animals to graze in the crop field., (D) Proper fencing of the field., (E), , 1., , None of these, , Which, , one, , among the, , (A) Ploughing, , following is not followed in agriculture?, (B) Manuring, (D) Irrigation, , Knitting and Weaving, , ), (E), , None of these, , 28Match the following:, , i., , Column A, , s, , Column B, , Rose, , a., , Bulb, , b., , Underground stem, , C., , Leaves, , d., , Stem, , ii. Bryophyllum, i., , Dahlia, , iv., , Potato, , (B) (i-c). (ii d), (ii b), (iv a), (D) (i-a). (ii -d). (ii b), (iv - c), -, , VA) (i-d), (ii c), (ii a), (iv b), (C) (i- b), (ii - c), (ii -a). (iv d), (E) None of these, , -, , -, , -, , -, , -, , -, , -, , 29. Cutting and gathering of ripened crops:, , (A)(A) Agriculture, (E), , (D) Germination, , B-Harvesting (C) Dispersal, , None of these, , 30 Complete the series., , Bryophyllum:, , ::, , Ginger : Underground, , (A) Root, (BLeaf, (E) None of these, , (C) Seed, , the, covering that protects, , h e outer, (B) Cotyledon, (A) Shoot, (E) None of these, h i c h one among the following, (A) Pea, (B) Poppy, (E) None of these, , stem, , (D) Spore, , baby plant inside the, , Seed coat (D), , (C), seeds, , are, , seed is called:, , dispersed by explosion?, , (C) Balsam, , (D), , All the above, , Bud

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INTERNATIONAL OLYMPIAD, , 33.Seeds of coconut have:, (A) Spiny covering, , (B) Fibrous covering, (D) Hooks, , (C) Wings, (E), , None of these, , 34. Which among the following seeds are dispersed by animals?, , (A) Pea, , (D) Balsam, , (C) Cocklebur, , (B) Coconut, , (E) None of theses, is a way of dispersal of seeds by bursting of seeds., , (A) Harvesting, , (B) Explosion, , (C) Germination, , (D) Agriculture, , (E) None of these, , 36 Which among the following has wings, , on, , seeds which, , away by the wind?, , (A) Coconut, (E) None of these, , help, , it to, , (B) Mango, , (CHiptage, , (D) Papaya, , pward, , (C) Left, , (D) Right, , 3The shoot grows., , (A) Downward, (E) None of these, This instrument is, , 38., , (A) Axe, , (E) None of these, , 9., , The result of, , (A) Fruit, 40., , a:, , (B) Well, , (C) Plough, , (D) Hammer, , germination of seed is:, , (E) None of these, Which of the, , (B) Seedling, , (C) Root, , (D) Flower, , is not, following, product of, Carbon dioxide, photosynthesis?, (C) Oxygen, (B) Glucose, a, , (E) None, , 32, , of these, , CLASS-S5, , (D), , All the above, , get carried