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NTA Abhyas NEET2020BotanyPlant - Growth and DevelopmentPractice

What does the term apical dominance mean?

Options

  1. ASuppression of growth of apical bud by axillary buds in the presence of hormone auxins
  2. BSuppression of growth of axillary buds by the presence of apical buds under the effect of hormone auxins.
  3. CSuppression of growth of axillary buds by the presence of apical buds under the effect of hormone cytokinins.
  4. DSuppression of growth of apical buds by the presence of axillary buds under the effect of hormone cytokinins.

Correct answer

B. Suppression of growth of axillary buds by the presence of apical buds under the effect of hormone auxins.

Step-by-step solution

In most higher plants, the growing apical bud inhibits the growth of the lateral (axillary) buds, a phenomenon called apical dominance. It happens under the effect of auxin hormone. Cytokinins help in overcoming apical dominance.

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