NEET 2026 (Phase 1) · BiologyPrevious Year Question
Heterophyllous development in response to environment is an example of which of the following phenomena?
- A.Redifferentiation
- B.Elasticity
- C.Dedifferentiation
- D.Plasticity✓
Correct Answer
(D) Plasticity
Solution & Explanation
Answer: (D) Plasticity. Solution: Plants following different developmental pathways in response to environment is called plasticity; heterophyllous development (e.g., different leaf shapes in air vs water in buttercup) is its classic example. Dedifferentiation/Redifferentiation refer to cells regaining/losing division capacity, and elasticity is not a developmental term here. NCERT: Ch 13, p.173, line ~9: "heterophyllous development due to environment ... This phenomenon of heterophylly is an example of plasticity".
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