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Science (086) — CBSE Class 10 board question

Q1. [1] § 6.2 COORDINATION IN PLANTS § 6.2.1 Immediate Response to Stimulus § 6.2.2 Movement Due to Growth
A plant growth inhibitor hormone which causes wilting of leaves is called :
  1. A Auxin
  2. B Cytokinin
  3. C Abscisic acid
  4. D Gibberellin
Previously asked in CBSE board exam
2024 31/4/1 Q7
Generated by claude-sonnet-4-6 · 2026-06-15 06:48 · grounding rag
Model Answer

C — Abscisic acid

Abscisic acid is a plant growth inhibitor hormone whose effects include wilting of leaves.

Explanation

The textbook explicitly states: "Abscisic acid is one example of a hormone which inhibits growth. Its effects include wilting of leaves." Auxin and gibberellin promote stem growth; cytokinin promotes cell division — none inhibit growth or cause wilting.

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Previous-year CBSE Grade 10 board exam questions, organised by subject and chapter, each with a model answer — free to read and print.