Assertion :The most widely used compound as source of ethylene is ethephon. Reason: Ethephon hastens fruit ripening in tomatoes and apples and accelerates abscission in stems and leaves.

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 C Assertion is correct but Reason is incorrect
Ethylene is a simple gaseous PGR. The most widely used compound as the source of ethylene is ethephon. Ethephon in an aqueous solution is readily absorbed and transported within the plant and releases ethylene slowly. Ethephon hastens fruit ripening in tomatoes arid apples and accelerates abscission in flowers and fruits (thinning of cotton, cherry, walnut). It promotes female flowers in cucumbers thereby increasing the yield.
So the correct answer is 'Assertion is correct but Reason is incorrect'.

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