Auxins promote

Apical dominance

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Cambial activity

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Cell growth

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All the above

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Solution

The correct option is C Apical dominance
Apical dominance is a phenomenon in which central stem is dominant and lateral stems are suppressed. It is due to plant hormone auxin produced in the tip of the shoot. Auxin hormone is responsible for apical dominance and cytokinin hormone is responsible for breaking the apical dominance.
Thus, the correct answer is 'Apical dominance'.

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Question 30.01:

Auxins are growth hormones capable of promoting cell elongation. They have been used in horticulture to promote growth, flowering and rooting. Write a line to explain the meaning of the following terms related to auxins.
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Anti-auxins

Synthetic auxins

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Q. IAA and IBA are auxins while NAA and 2,4-D are auxins.

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