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Class 11 Biology Practice Test: Mineral Nutrition - Mechanism of Absorption of Nutrients
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Class 11 Biology Practice Test: Mineral Nutrition - Mechanism of Absorption of Nutrients
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25 Questions

1. Statement A: Minerals are present in the soil in the form of charged particles.
Statement B: Concentration of minerals is lower in root than in soil.
2. Which of the following elements do not get translocated to younger parts?
3. Why can’t all minerals be passively absorbed through the roots?
4. What is understood by the term sink in the plants?
5. How do most of the nitrogen travels in the plants?
6. Where does the unloading of mineral ions occur in the plants?
7. Any mineral ion concentration that reduces that dry wt. of tissues by 10% is called as ___________
8. Which of the following statements if wrong about manganese toxicity?
9. Statement A: The process of absorption of minerals is divided into 2 phases.
Statement B: One phase of absorption is passive while the other is active.
10. What is the direction of food in the phloem?
11. A small amount of exchange of materials does take place between xylem and phloem.
12. Statement A: The outward movement is influx.
Statement B: The inward movement is efflux.
13. The translocation of mineral elements through the phloem is observed by radioisotope methods.
14. A small amount of exchange of materials does take place between xylem and phloem.
15. After active or passive absorption of all the mineral elements, how are minerals further transported?
16. Any mineral ion concentration that reduces that dry wt. of tissues by 10% is called as ___________
17. The root endodermis because of the layer of the cuticle can actively transport ions in all the directions.
18. Which of the following statements if wrong about manganese toxicity?
19. Where does the unloading of mineral ions occur in the plants?
20. Which of the following is not a chief sink for the mineral elements?
21. Which of the following is not a function of soil?
22. How do most minerals enter the root?
23. Which of the following carbohydrates acts as food for the plants?
24. Where do plants obtain most of their carbon and oxygen?
25. Which of the following is not a function of soil?