Why does seed dormancy take place?

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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. $1

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All of these

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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. $1$. Hard seed coats can physically restrict water uptake and gas exchange,preventing germination. $2$. Unfavourable environmental conditions (such as lack of water or extreme temperatures) naturally induce dormancy to ensure survival. $3$. Abscisic acid $(ABA)$ is a plant growth inhibitor that plays a crucial role in inducing and maintaining seed dormancy. Since all these factors contribute to the state of dormancy,the correct answer is $D$.

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