Botany
Assertion: Ethylene, a gaseous 
has no role in regulating physiological processes within a plant body and thus finds no application in agriculture industry.
Reason: Ethylene is used to initiate flowering and for synchronizing fruit-set in pineapples.
is a correct explanation of the Assertion . and Reason (R) are True but Reason 
is not a correct explanation of the Assertion . is True but the Reason (R) is False. is False but the Reason (R) is True.
Text Solution
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Botany
Ethylene breaks seed and bud dormancy, initiates germination in peanut seeds, sprouting of potato tubers. It promotes rapid internode/petiole elongation in deep water rice plants. Ethylene is used to initiate flowering and for synchronizing fruit-set in pineapples and also induces flowering in mango. Since ethylene regulates so many physiological processes, it is one of the most widely used PGR in agriculture. Hence, the assertion is false but the reason is true.
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