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(a) Name the gaseous plant hormone. Desc...

(a) Name the gaseous plant hormone. Describe its three different actions in plants.
(b) Which hormone is known as stress hormone in plants ? Why?

Text Solution

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(a) Ethylene is the gaseous plant hormone . Its physiological effects are :
(i) Ethylene promotes the ripening of fruits. Eg: Apple, Mango, Banana, etc.
(ii) Ethylene inhibits the elongation of stem and root in dicots.
(iii) Ethylene hastens the senescence of leaves and flowers.
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