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STD 12 - 1. sexual reproduction in flowering plants — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 1. sexual reproduction in flowering plants1 Mark
MCQ
Why seed dormancy takes place?
  • A
    Due to hard seed coat
  • B
    Due to unfavourable conditions
  • C
    Due to ABA
  • ✓
    All of these
✓

Answer

Correct option: D.
All of these
d
As the seed matures, its water content is reduced and seed becomes relatively dry ($10-15\%$ moisture by mass). The general metabolic activity of the embryo slows down. The embryo may enter a state of inactivity called dormancy. When favourable condition are available (adequate moisture, oxygen, suitable temperature) seeds germinate

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