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Plant Growth and Development — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYPlant Growth and Development1 Mark
MCQ
Seed dormancy is induced by:
  • A
    ABA
  • B
    GA
  • C
    Thiourea
  • D
    Cytokinin
✓

Answer

  1. ABA

Explanation:

Abscisic acid is a plant hormone. It is also called as stress hormone.

During unfavourable environmental conditions like drought, it induces seed dormancy.

When there is favaourable condition, seed dormancy is broken and germination takes place.

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