Question

Differentiation of shoot is controlled by
(a) high gibberellin : cytokinin ratio
(b) high auxin : cytokinin ratio
(c) high cytokinin : auxin ratio
(d) high gibberellin : auxin ratio

Answer 1

Answer:

a) high gibberellin - cyrokinin ratio

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Answer 2

Differentiation of shoot:

• Option “C” is correct i.e. high cytokinin: Auxin.

• Differentiation of shoot is controlled by high cytokinin to auxin ratio.

• A high cytokinin to auxin ratio elicits shoot formation but hinders root induction, while, a low ratio produces the reverse effect. Plant growth regulators (cytokinin, auxin) are extensively used to control differentiation in cultured plant cells and tissues.

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