EVERYDAY SCIENCE

Detailed explanation-1: -For example, almost all seeds have a small, visible scar (called the hilum) which is analogous to a human belly-button. This is where the seed was attached to the inside of the fruit on the mother plant. The hilum is fairly obvious in beans.

Detailed explanation-2: -In botany, a hilum (pronounced /ˈhaɪləm/) is a scar or mark left on a seed coat by the former attachment to the ovary wall or to the funiculus (which in turn attaches to the ovary wall). On a bean seed, the hilum is called the “eye".

Detailed explanation-3: -The hilum controls the content of water in seeds during the last phase of the formation of seeds.

Detailed explanation-4: -Your navel is technically named the umbilicus and is commonly called the “belly button.” All humans have them.

Detailed explanation-5: -Hilum is a distinct whitish oval scar on the concave side of the seed. It represents the spot where the ovule or seed was attached to the ovary wall or fruit wall.