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Assertion : Cyclis pathway of photosythe...

Assertion : Cyclis pathway of photosythesis first apperead in some eubacterial species.
Reason Oxygen started accumulating in the atmosphere after the nonj-cyclic pathway of photosynthesis evolved.

A

If both the asserition and the reasion are true and the reason is a correct explanation of the assertion

B

If both the assertion and reasoni s not a correct ecplanation of the assertio

C

If the assertion is true but the reason is false

D

If both the asseertion and reason are false

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The correct Answer is:
B
Cyclic pathway of photosynthesis is appeared first in some eubacteria species. It is supposed to be the first evidence of production of ATP in the presence of light. During non-cyclic photophosphorylation photolysis of water takes place. Under the influence of light energy and the catalytic action of chlorophyll, water a substance of low energy value, is split up into oxygen and hydrogen. Oxygen is used in the chloroplast. Non-cyclic photophosphorylation is the only natural process which adds molecular oxygen to the atmosphere.
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