Assertion :The stromal thylakoids are rich in ATP synthetase Reason: The granal membranes are rich in ATP synthetase

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
Assertion:
The stromal thylakoids are rich in ATP synthetase.
Reason:
The grana membranes are rich in ATP synthetase.
Both Assertion and Reason are incorrect.

The grana stacks of membranes are enriched in PS II and LHC, while there is little ATP synthetase. On the other hand, a fraction of stroma thylakoids is rich in PSI and ATPase and poor in PS II and LHC.

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