DENDROLOGY

Detailed explanation-1: -Answer: A tiny hole, called the microphyle, found along the seam of the seed, allows water to enter the seed, softening it so the embryo can break through the covering and begin to germinate.

Detailed explanation-2: -Primarily, the hilum and micropyle differ in the fact that the hilum is an elliptical scar on seeds marking the point of contact of attachment of the funicle, while the micropyle is the small opening of the hilum wherein the pollen tube passe through before fertilisation.

Detailed explanation-3: -Hilum and micropyle are two characteristic markers located on the seed coat. Hilum shows the attachment site of the ovule to the ovary wall. On the other hand, micropyle shows the point from which the pollen tube entered the ovary during the fertilization.