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Gibberellin

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Question

The characteristics like expansion, breaking dormancy, promoting germination and flowering are associated with

A

Auxins

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B

Gibberellins

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C

Cytokinins

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D

Ethylene

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Solution

The correct option is B Gibberellins
Gibberellin is a plant hormone that is involved in various physiological processes of plants. It acts as plant growth regulator. It is involved in various processes like stem elongation, germination, flowering and leaf senescence. It breaks the seed dormancy and promotes germination. Flowering requires either long day or cold temperature. However, gibberellin induces flowering under normal condition.
Thus, the correct answer is option B.

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(ii) Promoting senescence and abscission of leaves and flowers.
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.......... Plant hormone producing increased stem growth; also involved in flowering and seed germination.

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