General Science • BiologyHard
Assertion (A): Nitrogen fixation by leguminous root nodules is an essential ecological process converting atmospheric nitrogen into ammonia. Reason (R): Rhizobium bacteria residing in root nodules possess the nitrogenase enzyme complex necessary to break the strong triple covalent bond of molecular nitrogen.
A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion✓ Correct Answer
B. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
C. Assertion is true but Reason is false
D. Assertion is false but Reason is true
💡 Solution & Explanation
Both the assertion and reason are correct, and the reason accurately explains the enzymatic mechanism behind biological nitrogen fixation by symbiotic root nodule bacteria. The nitrogenase enzyme complex catalyzes the reduction of inert atmospheric nitrogen gas into bioavailable ammonia utilizing metabolic energy. Leguminous crops are widely cultivated in agricultural rotation systems to naturally enrich soil fertility without chemical fertilizers.
More General Science Biology questions
- Which vitamin functions as a coenzyme in blood clotting and is synthesized by gut bacteria in humans?
- Which immunoglobulin antibody is primarily involved in mediating immediate hypersensitivity reactions and…
- Which nitrogenous waste product is excreted primarily by birds, reptiles, and terrestrial insects to conserve…
- Which vascular bundle arrangement is characterized by xylem and phloem situated along the same radius?
- Which hormone is primarily responsible for inducing stomatal closure in vascular plants under severe water…