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NEET UG BIOLOGY MCQ: PHOTOSYNTHESIS IN HIGHER PLANTS
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Analyzing
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Assertion (A): Under condition of high light intensity and limited supply,photorespiration has a useful role in protecting the plants from photooxidative damage.
Reason (R): If enough is not available to utilize light energy for carboxylation to proceed, the excess energy may not cause damage to plants.
Reason (R): If enough is not available to utilize light energy for carboxylation to proceed, the excess energy may not cause damage to plants.
View answer and explanation
Correct option: A
If both Assertion and Reason are true and Reason is the correct explanation of Assertion
Option C (If assertion is true but Reason is false) is correct because photorespiration does protect plants under high light and low CO2, but the excess energy *does* cause damage if not utilized.
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I. When only PS I is functional, cyclic flow of electrons is not possible
II. The breakdown of the gradient provides enough to make the enzyme synthesis
III. The NADP reductase enzyme is located of the thylakoid membrane
IV. Proton gradient increases due to and Cyt . Law of limiting factors was given by