Multiple choice

The seed dormancy observed in angiosperms due to impermeable layers developing during maturation and drying of the seed is termed as

  1. combinational dormancy

  2. morphophysiological dormancy

  3. chemical dormancy

  4. physical dormancy

  5. mechanical dormancy
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D Correct answer
Explanation

Dormancy that is caused by an impermeable seed coat is known as physical dormancy. Physical dormancy is the result of impermeable layer(s) that develops during maturation and drying of the seed or fruit.This impermeable layer prevents the seed from taking up water or gases. As a result, the seed is prevented from germinating until dormancy is broken.

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