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What is the role of auxins in apical dominance?

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Question: What is the role of auxins in apical dominance?

Options:

  1. Promote lateral bud growth
  2. Inhibit lateral bud growth
  3. Stimulate root growth
  4. Enhance leaf growth

Correct Answer: Inhibit lateral bud growth

Solution: 

Auxins inhibit the growth of lateral buds, maintaining apical dominance in plants.

What is the role of auxins in apical dominance?

Practice Questions

Q1
What is the role of auxins in apical dominance?
  1. Promote lateral bud growth
  2. Inhibit lateral bud growth
  3. Stimulate root growth
  4. Enhance leaf growth

Questions & Step-by-Step Solutions

What is the role of auxins in apical dominance?
Correct Answer: Auxins inhibit the growth of lateral buds, maintaining apical dominance in plants.
  • Step 1: Understand that auxins are a type of plant hormone.
  • Step 2: Know that apical dominance is when the main shoot of a plant grows more than the side shoots.
  • Step 3: Learn that auxins are produced at the tip of the plant (the apical bud).
  • Step 4: Realize that auxins travel down the plant and affect growth.
  • Step 5: Understand that auxins inhibit (stop) the growth of lateral buds (side shoots).
  • Step 6: Conclude that by inhibiting lateral buds, auxins help the main shoot grow taller, maintaining apical dominance.
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