NEET 2025 · BiologyPrevious Year Question
Read the following statements on plant growth and development. A. Parthenocarpy can be induced by auxins. B. Plant growth regulators can be involved in promotion as well as inhibition of growth. C. Dedifferentiation is a pre-requisite for re-differentiation. D. Abscisic acid is a plant growth promoter. E. Apical dominance promotes the growth of lateral buds. Choose the option with all correct statements.
Answer: (C) A, B, C only. Answer: (C) A, B, C only.
- A.A, D, E only
- B.B, D, E only
- C.A, B, C only✓
- D.A, C, E only
Correct Answer
(C) A, B, C only
Solution & Explanation
Answer: (C) A, B, C only. Solution: A is correct: auxins induce parthenocarpy (e.g., tomatoes). B is correct: PGRs are involved in both growth promotion and inhibition. C is correct: dedifferentiation is a prerequisite for redifferentiation. D is wrong because ABA is a growth inhibitor, not a promoter; E is wrong because apical dominance inhibits (not promotes) lateral bud growth. NCERT: Ch 13, p.175, line ~39: "the growing apical bud inhibits the growth of the lateral (axillary) buds".
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