Biological Classification And System Of Classification Question 285
Question: 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
Show Answer
Answer:
Correct Answer: A
Solution:
Rhizobium form a symbiotic association with roots of leguminous plants producing root nodules.
These bacteria reside inside the nodules and reduce atmospheric nitrogen $ (N_2) $ to ammonia.
The fixed nitrogen is taken up by plant.
In return the plant provides nutrients both and protection to bacteria.
BETA
