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Assertion: Rubisco is a highly efficient enzyme in terms of its catalytic activity.

Reasoning: Rubisco is capable of catalysing the carboxylation of RuBP and the fixation of CO2, which is an essential step in the Dark Reaction of photosynthesis.

Option: 1

Both Assertion (A) and Reason (R) are true and Reason (R) is a correct explanation of Assertion (A).


Option: 2

Both Assertion (A) and Reason (R) are true but Reason (R) is not a correct explanation of Assertion (A).


Option: 3

Assertion (A) is true but Reason (R) is false.

 


Option: 4

Assertion (A) is false but Reason (R) is true


Answers (1)

best_answer

Rubisco is not considered to be a highly efficient enzyme, as it can also catalyse a reaction with O2, which leads to a loss of energy and efficiency in the process. This is known as photorespiration and is a wasteful process that can reduce the efficiency of photosynthesis. Therefore, it states that Assertion (A) is false but Reason (R) is true. Hence, the correct answer is option 4. 

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