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SSS., Chap.13, , Structure and function of plants, Hard words:, . Root, , . Shoot, , . Fibrous, , . Nutrients, , . Stem, , . Trunk, , . Leaf blade, , . Veins, , . Stalk, , 10. Blade, , 11. Midrib, , 12. Stomata, , 13. Cabon di oxide, , 14. Photosynthesis, , 15. Medicine 7:59 AM WY, , Chap.13, , Word meanings:, 1. Family- set, placed or attached in a, way that is not easily moved., , 2. Nutrient- a substance that, , plant ,animals and people need to live, and grow., , 3. Prevent- to stop (something) from, happening or existing., , 4. buds- small parts that grows ona, plant and develops into a flower leaf, or new branch., , 5. Nectar -a sweet liquid produced by, plants and used by bees in making, honey., , 6. Structure -to arrange or organise, (something) in a particular way., , 7. Fibrous- containing made of or, resembling fibers., , 8. Prevent- not having a usual, covering., , 9. Attractive- having a feature or, quality that people like ., , 10. thorny - having a lot of Thorns., , 8:10 AM W, , OOANANAKRWN —
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D. Answer the following, questions ., , Q.1. What are the functions of a), root b) stem?, Ans. Functions of root:, 1. Roots absorb water and, Minerals from the soil and fix the, plant firmly in the soil., , 2. Roots of some plants like, carrot and radish store food., , 3. Roots of some trees such as, Banyan hang and support the, trees., , Functions of stem:, , 1. The stem helps in the, movement of water and food, throughout the plant., , 2. It bears leaves and flowers ., 3. Stems of some plants such as, ginger ,potato etc. store food., Q.2. What is a leaf blade?, , Ans. The flat part of a leaf is, called the leaf blade., , Q.3. What is the function of, stomata?, , Ans. Stomata help in the, movement of air and water vapour, in the air in and out of a leaf., , Q.4. Draw and label the parts of a, , , , leaf., Ans. The label part of a leaf are as, follows: 8:37 AMY, , , , Ect, , Q.5. What is photosynthesis?, , Ans. The process of making food by, , the green plants in the presence of, , Sunlight using carbon dioxide of the, , air and water from the soil is called, , photosynthesis., , E. Think and answer., , Q.1. What will happen to a plant if its, , roots are cut ?, , Ans. In the absence of roots the, , plant will not get water and Minerals, , from the soil as a result it will wilt, , and ultimately die., , Q.2. Plants should not be kept in, , closed room .Why ?, , Ans. In closed room plants do not get, , required amount of carbon, , dioxide ,sunlight and water for, , photosynthesis this is why they, , should not be kept in closed rooms., 8:42 AMV
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Chap.13, , Exercises., , A. Tick the correct answer ., , 1. a bud changes into, , a) flower ) fruit c) leaf, , answer -a )flower, , 2. There are types of roots, , a) three b) two c) four, , ans. b) four, , 3. The tiny pores present in the leaf, , are called, , a) stomata b) veins cc) apex, , Ans. a) Stomata, , 4. Fruits contains, , a) flowers. b) seeds. c) buds, , Ans. b) seeds, , B. Write true or false., , 1. The stem is underground part of a, , plant. (False), , 2. The leaf is called the kitchen of, , plant. (true), , 3. The fruit change into a flower., , ( False), , 4. The potato is an underground root., , (false), , C. Fill in the blanks with the right, , word from the box ., , 1. The two types of roots are, and ‘, , Ans.Tap roots fibrous root, , 2. The stem of a tree is called a, , Ans. Trunk, , , , , , , , , , 3. The make food for the, plants ., , Ans. leaves, , 4 .The give rise to a new plant., , , , Ans.flowers 8:25 AM V
