What are the causes of long-term seed dormanc | vedclass

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(D) Seed dormancy is a state in which seeds are prevented from germinating even under environmental conditions normally favourable for germination. Ca

Vedclass · Accepted Answer

All of the above

Vedclass · Answer

(D) Seed dormancy is a state in which seeds are prevented from germinating even under environmental conditions normally favourable for germination. Causes of seed dormancy include: $1$. Impermeable seed coat: The seed coat may be impermeable to water or oxygen,preventing the embryo from initiating metabolic activities. $2$. Immature embryo: In some species,the embryo is not fully developed at the time of seed dispersal and requires a period of maturation. $3$. Presence of chemical inhibitors: The presence of growth inhibitors like Abscisic Acid $(ABA)$ prevents germination until the concentration of these inhibitors decreases or is overcome by growth promoters like Gibberellins. Therefore,all the given options are correct causes of seed dormancy.

What are the causes of long-term seed dormancy?

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