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Class 11 Biology Chapter 12 Mineral Nutrition Quiz 2 (25 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. To the plants soil is not the source of-

Correct Answer: A) C.

2. Micronutrients are needed in very small amount because-

Correct Answer: B) They mainly function as cofactors of enzyme.

3. Deficiency symptoms of nitrogen and potassium are visible first in

Correct Answer: A) Senescent leaves.

4. What is the conclusion of Experiment V?

Correct Answer: C) Light is necessary for photosynthesis.

5. Leaf transpiration mainly depends on

Correct Answer: A) Stomatal opening degree.

6. Which of the following elements is responsible for maintaining turgor in cells?

Correct Answer: A) Potassium.

7. During oxidative phosphorylation, H20 is the final electron acceptor.

Correct Answer: B) False.

8. Q4) During biological nitrogen fixation, inactivation of nitrogenase by oxygen poisoning is prevented by

Correct Answer: A) Leghaemoglobin.

9. Bivalent ion known to help plants in synthesis of IAA is

Correct Answer: B) Zn2+.

10. What deficiency symptom is associated with Phosphorus?

Correct Answer: A) Purple or red leaves.

11. Nitrogen fixation in root nodules of Alnus is brought about by

Correct Answer: C) Frankia.

12. Which is a false statement regarding macronutrients?

Correct Answer: B) Become toxic in slight excess.

13. What is the importance of photosynthesis?

Correct Answer: A) Provides food for animals.

14. What is the overall chemical reaction for photosynthesis?

Correct Answer: B) 6CO2 + 6H2O $\rightarrow$ C6H12O6 + 6O2.

15. Transpiration through leaves occurs mainly through

Correct Answer: C) Stomata (primary) and leaf surface (secondary).

16. Crop plants absorb carbon in the form of-

Correct Answer: C) CO$_{2}$ from the air.

17. What are the raw materials required for photosynthesis?

Correct Answer: C) Carbon dioxide and water.

18. Which micronutrient is crucial for chlorophyll synthesis?

Correct Answer: D) Iron.

19. Which one of the following elements in plants is not remobilised?

Correct Answer: C) Calcium.

20. What is the main method by which plants acquire mineral nutrients?

Correct Answer: B) Active transport.

21. Which of the following is a by-product of photosynthesis?

Correct Answer: C) Oxygen.

22. Aspargine and Glutamine are:

Correct Answer: C) Amide.

23. Which one of the following elements is not an essential micronutrient for plant growth?

Correct Answer: B) Zn.

24. Component of nitrogenase and nitrate reductase is

Correct Answer: B) Mo.

25. The most abundant element found in plants is

Correct Answer: A) Carbon.

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