Choose the correct answer from the alternatives given.
Which of the following plant hormones stimulates the ripening of fruit and inhibits plant growth?

Abscisic acid

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Cytokinin

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Ethylene

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Gibberellin

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Solution

The correct option is C Ethylene
Ethylene is a simple gaseous PGR.
It is synthesised in large amounts by tissues undergoing senescence and ripening fruits.
Influences of ethylene on plants include horizontal growth of seedlings, swelling of the axis and apical hook formation in dicot seedlings.
Ethylene promotes senescence and abscission of plant organs, especially of leaves and flowers.
Ethylene is highly effective in fruit ripening
So, the correct option is 'Ethylene'.

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