Plant Growth and Development Question 35

35. Differentiation of shoot is controlled by [2003]

(a) high gibberellin : cytokinin ratio

(b) high auxin : cytokinin ratio

(c) high cytokinin : auxin ratio

(d) high gibberellin : auxin ratio

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Answer : c

Hints & Solutions

(c) Differentiation of root is controlled by high auxin concentration. While in tissue culture, auxin concentration is made high to promote rooting.