Class 7 - Biology - Nutrition in Plants

Chapter Name : Biology - Nutrition in Plants 

1 Mark questions : 

1. What are Nutrients?
2. Define Nutrition. (2017-18)
3. Define Oxidation.
4. What are the two types of Nutritions?
5. Why are autotrophs called as Producers? (2018-19)
6. State the energy conversion that takes place in Photosynthesis.
7. Who coined the term "Photosynthesis"?
8. How is Carbon-di-Oxide taken up by plants?
9. Which is the special cell which regulates the opening and closing of Stomata?

10. Write the functions of Guard cell.

11. Why is Caustic potash used in the experiment to show "Carbon dioxide is necessary for Photosynthesis"?

12. Explain Destarching.

13. How will you test Starch present in a leaf?

14. Write the functions of Chlorophyll.

15. What is variegated leaf?

16. Why should leaf be dropped in the boiling water in the experiment to show "Chlorophyll is necessary for Photosynthesis"?

17. Why is leaf boiled in rectified spirit (Alcohol) in the above mentioned activity.

18. Why is sunlight is essential for Photosynthesis?
19. Which gas is only the Supporter of Combustion?
20. Is fungi a part of plant Kingdom? To which kingdom does it belong to?
21.Name the sucking root present in the parasitic plant like Dodder. (2016-17)

22. Name the process by which the energy is released in preparation of Food? (2017-18)
23. Why are animals called as Consumers? (2015-16, 2018-19)
24. What is Humus? (2018-19)
25. Define Stomata.
26. Name the bacteria present in the roots of the leguminous plants.
27. We also cook our food. Are we Autotrophs?
28. Why do fallen leaves not turn blue-black on being tested with iodine?
29. If we provide Carbon-di-oxide, Water and Sunlight to a person, can he make food like plants?
Why or Why not?

2 Mark Questions :

1. How do autotrophs differ from heterotrophs? (2017-18)
2. Draw the schematic diagram of Photosynthesis and label its parts. (2018-19)
3. List the conditions necessary for Photosynthesis.
4. Explain the structure of Cell. (2016-17)

5. Explain Autotrophic nutrition. (2018-19)

6. What is Chlorophyll and where it is present?

7. How do plants take in water and minerals?
8. Where do photosynthesis process occur in plants?

9. Define Heterotrophic Nutrition.
10. Why are non-green plants called Heterotrophs?
11. List the 4 groups into which heterotrophic plants be divided.
12. What are Parasites? Give example.
13. Define Host & Haustoria.
14. What are Saprophytes? Give example.
15. Why do insectivorous plants trap insects? Give example.
16. Define Symbiosis with example.
17. Differentiate between Parasites and Saprophytes with example.
18. How do cells derive energy from the food we eat?
19. How do plants exchange gases?

3 Mark Questions :

1. What are the methods by which nutrients in the soil can be replenished? (2018-19)
2. What is the importance of Photosynthesis in nature? (2016-17)
3. How does a pitcher plant trap insects? (2017-18)

4. Explain (or) Define Photosynthesis and write its chemical equation.
5. Differentiate between Saprophytes and Green Plants.

5 Mark Questions

1. Explain briefly about the methods by which soil nutrients can be replenished.
2. How would you show that "Chlorophyll is necessary for Photosynthesis"?
3. How would you show that "Carbon-di-oxide is necessary for Photosynthesis"?
4. How does dodder (Cuscuta) draw its nutrients from the host? Explain.