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Class 11 Biology Chapter 12 Mineral Nutrition Quiz 6 (25 MCQs)

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1. What is the concentration of carbon dioxide in the atmosphere?
2. What is the primary function of Zinc in plants?
3. For its activity, carboxypeptidase requires:
4. Grey spots of oat are due to deficiency of
5. What is the effect of temperature near 0$^\circ$C on enzymes affecting photosynthesis?
6. What is the process by which chlorophyll containing organisms synthesize complex organic molecules from simple inorganic substances in the presence of light?
7. What is the main characteristic of mobile essential elements?
8. Is the process in plants which converts light energy to chemical energy?
9. What is the aim of Experiment II?
10. The enzyme nitrogenase is extremely sensitive to:
11. Which part of the plant is the main photosynthetic organ?
12. What is the role of auxins in plants?
13. An element playing important role in nitrogen fixation is
14. Some elements like ..... delay flowering if their concentration in plants is low.
15. The function of leghaemoglobin in the root nodules of legumes is
16. What is the primary source of inorganic substances for plants?
17. The major role of minor elements inside living organisms is to act as
18. . The leaves turn dark green in colour is due to the deficiency of the element, .....
19. Which of the following is NOT considered a macronutrient?
20. The cell of a root nodule in leguminous plant shows a rod shaped structure called .....
21. For its action, nitrogenase requires
22. Which of the following nutrients is required in very low concentrations?
23. The products of reaction catalysed by nitrogenase in root nodules of leguminous plants is/are
24. A plant requires magnesium for
25. Which is not a criterion for essentiality of a mineral?
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