Question

In the proms of apical dominance, lateral buds are unable to grow in the presence of apical bud. This is due to

• A. Less amount of auxin in apical bud
• B. More amount of auxin in apical bud
• C. Less amount of cytokinins in lateral buds
• D. More amount of cytokinins in lateral buds.

Answer 1

Answer: (B)

More amount of auxin in apical bud

Apical dominance is the phenomenon by which presence of apical bud does not allow the nearby lateral buds to grow. When the apical bud is removed, the lateral buds sprout. Apical bud inhibits the growth of lateral buds by releasing auxins. When a plant is decapitated i.e., its apical bud is removed then the lateral buds sprout, resulting in dense bushy growth. This phenomenon is widely used in the tea plucking and hedge making.

So the correct answer is 'More amount of auxin in apical bud'.