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Q.

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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a

Both assertion and reason are incorrect.

b

Assertion is correct and reason in incorrect

c

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

d

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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