NEET 2020
- Exam
- NEET
- Year
- 2020
- Subject
- Botany
- Chapter
- Mineral Nutrition
NEET 2020 · Botany · Mineral Nutrition
Match the following concerning essential elements and their...
Match the following concerning essential elements and their functions in plants
| (a) | Iron | (i) | Photolysis of water |
| (b) | Zinc | (ii) | Pollen germination |
| (c) | Boron | (iii) | Required for chlorophyll biosynthesis |
| (d) | Manganese | (iv) | IAA biosynthesis |
Select the correct option.
Options
- A(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
- B(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
- C(a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
- D(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
Correct answer
B. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
Step-by-step solution
| Element | Biological function |
| Iron | (i) Absorption from acidic soil, because present in the soluble form. (ii) Iron-porphyrin protein for cytochromes, Peroxidase, Catalases (Photorespiration) (iii) Important for ferredoxin, biological N2 fixation & ETS. (iv) Essential role in chlorophyll synthesis. (v) Necessary for the activity of aconitase enzyme of respiration. |
| Zinc | (i) Specific role in Auxin (IAA) hormone synthesis in cells. (ii) Activator of carbonic anhydrase, carboxylases, alcohol dehydrogenase, peptidase. (iii) In seed formation. |
| Boron | (i) B is the only micronutrient, which is not associated with enzymes. (ii) Required for uptake and utilization of Ca2+, membrane functioning, Pollen germination, cell elongation, cell differentiation, and carbohydrate translocation. (iii) Important for active salt absorption, nodule formation, and flowering or fruiting. (iv) B is essential in pollen tube formation. (v) Lethal effect at carbohydrate metabolic site. |
| Manganese | (i) Mn++ is the activator of many enzymes like nitrite reductase, hydroxylamine reductase decarboxylase, dehydrogenase. (ii) Essential for O2 evolution and photolysis of water in the light reaction (iii) Respiratory metabolism. |