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  4. Assertion: Ethylene stimulates growth in case of wounds and thus helps in wound heating. Reason: Ethylene causes triple response growth in plants.

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Q. Assertion: Ethylene stimulates growth in case of wounds and thus helps in wound heating. Reason: Ethylene causes triple response growth in plants.

VMMC MedicalVMMC Medical 2010

Solution:

Ethylene is the only gaseous natural path growth regulator. It inhibits stem elongation and stimulates its transverse expansion to accelerates abscission of leaves, flowers and fruits. It stimulates growth in case of wound and thus helps in wound healing.