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  4. Apical dominance is caused by

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Q. Apical dominance is caused by

BHUBHU 2007

Solution:

In many plants, as the apical bud grows, the growth of lower axillary buds is suppressed. Removal of apical bud results in the growth of lower buds. The auxin ( $IAA$ ) of the terminal bud inhibits the growth of lateral buds. This phenomenon is known as apical dominance.