Which one of the following mineral element plays
an important role in biological nitrogen fixation?
(a) Copper (b) Manganese
(c) Zinc (d) Molybdenum
Answers
Explanation:
i think so (b) manganese
Molybdenum plays an important role in biological nitrogen fixation
Option-(D)
Step by step explanation
Molybdenum is one of the essential constituents of micronutrients. Like manganese, It is essential in plant development in small amount. It plays a crucial role in regulating the different plant functions.
Molybdenum is an essential component in which two enzymes transforms nitrate into nitrite which is a toxic form of nitrogen and then ammonia until it is used to synthesize amino acids within the plant.
Molybdenum is the only micronutrients that becomes unavailable with decreasing medium pH. So if there is any deficiency it can be checked by the pH medium in growth of plant.
Molybdenum also plays an essential role in plant use of phosphorus. Factors affecting molybdenum includes excess water ‐ high rainfall and frequent irrigation can wash away molybdenum from the soil.
- Role of manganese in plants
Manganese is a micronutrient to the plants. It fulfills a number of roles and is used in photosynthesis , chlorophyll synthesis and nitrogen absorption, as well as riboflavin, ascorbic acid and carotene synthesis.
Manganese deficiency is most common in alkaline and poorly drained soils as well as it is highly in available iron.
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