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Class 11 Biology Chapter 12 Mineral Nutrition Quiz 5 (25 MCQs)

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1. Which of the following techniques can researchers use to explore plant nutrient deficiencies?
2. A few normal seedlings of tomato were kept in a dark room. After a few days they were found to have become white-coloured like albinos. Which of the following terms will you use to describe them?
3. Nitrifying bacteria
4. A mineral deficiency is likely to affect older leaves more than younger leaves if the-
5. Why does a plant need nitrates from the soil? Choose the best answer.
6. At physiological pH, the ammonia is protonated to form .....
7. Which nutrient deficiency leads to necrosis at the tips of roots?
8. The xylem of plants is composed of
9. About 98% of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and:
10. Every phase of cellular respiration requires oxygen.
11. Which nutrient deficiency leads to the localized death of tissue in leaves?
12. What effect does soil pH have on nutrient availability?
13. Which one of the following is correctly matched?
14. . Component of chlorophyllII. Helps to maintain ribosome structureIII. Activator for Rubisco and PepcoIV. Activates the enzymes of respiration and photosynthesisV. Involved in synthesis of nucleic acidsThe above roles are played by-
15. Excess of Mn causes deficiency of-
16. Concerning water and mineral absorption by roots, how many statements are correct?I. Transpiration creates a pulling force.II. Root metabolism increases osmotic pressure.III. Water is absorbed actively. IV. Mineral ions are absorbed actively and passively.
17. Deficiency of which mineral causes deficiency of N-
18. What is the role of light intensity in photosynthesis?
19. What is the consequence of a deficiency in Iron?
20. What is the main consequence of a deficiency in Boron?
21. What is the effect of Sulfur deficiency on young leaves?
22. What is the main function of Potassium in plants?
23. Which nutrient is involved in nitrate assimilation?
24. The first experiment on hydrophonics was performed by-
25. What product is formed when NH4+ react with $\alpha$
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