AIIMS2008Botany-Plant Physiology
AIIMS 2008 Botany Photosynthesis Assertion Reason Question
Type: Assertion Reason-conceptual-Medium-Class 11
Assertion: The higher concentration of O₂ in the atmosphere is inhibitory to photosynthesis. Reason: CO₂ is the main substrate of photosynthesis.
A
Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
B
Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
C
Assertion is true but Reason is false.
D
Both Assertion and Reason are false.
Correct Answer
Option B
Detailed Explanation
Oxygen accumulation causes substantial inhibition of photosynthesis.
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