The phenomenon of apical dominance can be overcome by exogenous application of ___________.

auxins

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gibberellins

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cytokinins

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ethylene.

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Solution

The correct option is C cytokinins
Presence of cytokinin in an area causes preferential movement of nutrients towards it. When applied to lateral buds, they help in their growth despite the presence of apical bud. They thus act antagonistically to auxin which promotes apical dominance. Therefore, cytokinin can overcome apical dominance, caused by auxins.

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Question 03:

The effect of apical dominance can be overcome by which of the following hormone?
(a) IAA
(b) Ethylene
(c) Gibberellin
(d) Cytokinin

Apical dominance phenomenon is caused by :

(a) auxins (b) GA

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