Assertion : The nitrogen-fixing bacteria in leguminous plant nodules live as symbionts.
Reason : Leg-haemoglobin synthesized by leguminous plants protect bacteria

Options

A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false

Answer

A

Explanation

Leghemoglobin is a nitrogen or oxygen carrier and hemoprotein found in the nitrogen fixing root nodules of leguminous plants.