NEET Biology question

Statement 1: Cyclic pathway of photosynthesis first appeared in some eubacterial species. Statement 2: Oxygen started accumulating in the atmosphere after the non-cyclic pathway of photosynthesis evolved.

(A)Assertion is True, Reason is True; Reason is correct explanation for Assertion
(B)Assertion is True, Reason is True; Reason is not correct explanation for AssertionCorrect
(C)Assertion is True, Reason is False
(D)Assertion is False, Reason is True

Answer: (B)

Solution

Both statements are independently true facts about the evolution of photosynthesis: cyclic photophosphorylation (using only PS-I) is thought to have evolved first in ancient eubacteria for ATP production, while atmospheric oxygen accumulated

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-128035