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NEET 2023 Phase 1 · BiologyPrevious Year Question

Removal of shoot tips is a very useful technique to boost the production of tea-leaves. This is because

Answer: (C) Effect of auxins is removed and growth of lateral buds is enhanced.. Answer: (C) Effect of auxins is removed and growth of lateral buds is enhanced.

  1. A.Gibberellins prevent bolting and are inactivated
  2. B.Auxins prevent leaf drop at early stages
  3. C.Effect of auxins is removed and growth of lateral buds is enhanced.✓
  4. D.Gibberellins delay senescence of leaves.

Correct Answer

(C) Effect of auxins is removed and growth of lateral buds is enhanced.

Solution & Explanation

Answer: (C) Effect of auxins is removed and growth of lateral buds is enhanced. Solution: The apical bud produces auxin that suppresses axillary (lateral) buds, a phenomenon called apical dominance. Removing the shoot tips (decapitation) eliminates this auxin source, so lateral buds grow and produce a bushier flush of tea leaves; hence the technique is used in tea plantations. The gibberellin-based distractors are unrelated to decapitation. NCERT: Ch 13, p.175, line ~41: "Removal of shoot tips (decapitation) usually results in the growth of lateral buds".

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