Question

How does the seed coat do not enter the water and allow the seed to dry down upon maturity?​

Answer 1

Dormancy caused by an impermeable seeds coat is know 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

I hope it's helpful for you.....