TOPIC: NUTRITION IN PLANTS
Q.1. Give reasons for each of the following:
(a) All living organisms need to take food.
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(b) Algae are classified as autotroph.
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(c) Lichens are a good example of symbiosis in organisms.
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(d) Insectivorous plants are partial heterotrophs.
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Q.2. What are the conditions necessary for photosynthesis to take place? How are these fulfilled?
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Q.3. Write the word equation for Photosynthesis.
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Q.4. How would you test the presence of starch in leaves?
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Q.5. If plants cease to exist today; all other living organisms would also perish. Explain why?
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Q.6. Write two differences between: -
(a) Saprophytes and parasites
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(b) Photosynthesis and respiration
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Q.7. The stomata are surrounded by guard cells. Why?
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Q.8. Rhizobium is a symbiotic bacterium. Explain.
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Q.9. Green plants are autotrophs but insectivorous plants are heterotrophs. Give reasons.
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Q10. Nitrogen is an essential nutrient for plant growth. But farmers who cultivate pulse, crops like green gram, Bengal gram, pea, etc. do not apply nitrogenous fertilizers during cultivation. Why?
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Please click on below link to download CBSE Class 7 Science Nutrition in plants Worksheet Set D