CBSE Class 7 Science Nutrition in Plants Worksheets with Answers - Chapter 1.pdf

CBSE VII Chapter 1 Nutrition in Plants 1. Match the following. Solution: (a) – (iv) (b) – (v) (c) – (i) (d) – (ii) (e) – (iv) 2. Fill in the blanks. (a) Green plants are called ____________, since they synthesize their own food. (b) Oxygen is released by plants...

CBSE VII Chapter 1 Nutrition in Plants 1. Match the following. Solution: (a) – (iv) (b) – (v) (c) – (i) (d) – (ii) (e) – (iv) 2. Fill in the blanks. (a) Green plants are called ____________, since they synthesize their own food. (b) Oxygen is released by plants during _________________. (c) _____________ live on dead and decaying animals. (d) ____________ is the green coloured pigments present in leaves. (e) The food synthesized by the plants is stored as __________ Solution: (a) Autotrophs (b) photosynthesis (c) saprophytes (d) chlorophylls (e) starch 3. What is photosynthesis? Solution: The process by which green plants synthesise their food using sunlight, carbohydrates, water and chlorophyll is called photosynthesis. 4. Distinguished between parasite and saprophytes. Solution: Those organisms that obtain their food from other organism by harming them are called parasite. For example-Cuscuta, lice, mosquito. Those organisms that obtain food from dead and decaying materials are called saprophytes. For example- bacteria and fungi. 5. What are insectivorous plants? Give two examples. Solution: Those plants that eat insects by trapping them are called insectivorous plants. They obtain protein from insects. For example- Pitcher plants and Drosophila. 6. Observe the diagrams of organisms given below. Name them and write their category. Solution: (A) Name- Mushroom. Category - Saprophytes. (B) Name – Pitcher plant. Category – Insectivores. (C) Name – Cuscuta. Category – Parasites 7. Match the following: Solution: (a) – (iii), (b) – (i), (c) – (iv), (d) – (v), (e) – (ii). 8. Write T for true and F for false statements. (a) Green plants prepare their food hence they are Autotrophs. (b) Carbon dioxide gas is released in the process of photosynthesis. (c) Carnivores are flesh eating animals. (d) Minute pores on the leaf surface are called stomata. (e) Cuscuta is an insectivorous plant. Solution: (a) T (b) F (c) T (d) T (e) F 9. What is the mode of nutrition in plants? Solution: The mode of nutrition in plants is autotrophic. Plants prepare their food by the process of photosynthesis using inorganic substance. 10. Rearrange the letters to find out the words related to plant nutrition. (a) ROPHYLCHLO (b) UNLISUNHGT (c) TERAW (d) TOSAMTA Solution: (a) CHLOROPHYLL (b) SUNLIGHT (c) WATER (d) STOMATA