Assertion: Modified stems of Euphorbia are involved in release of oxygen during day time.
Reason: Euphorbia has green, fleshy and cylindrical modified stems with chlorophyll.

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Both assertion and reason are incorrect.

Assertion is correct and reason in incorrect

Both assertion and reason are correct and reason does not explain the assertion.

Both assertion and reason are correct and reason correctly explains the assertion.

answer is D.

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Detailed Solution

The modified stems of euphorbia are phylloclades. These are green, fleshy, cylindrical and perform photosynthesis during which they release oxygen.

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