Question

My question is what is hilium

Answer 1

Answer:

In botany, a hilum is a scar or mark left on a seed coat by the former attachment to the ovary wall or to the funiculus. On a bean seed, the hilum is called the "eye". For some species of fungus, the hilum is the microscopic indentation left on a spore when it separates from the sterigma of the basidium

Explanation:

Answer 2

Answer:

Helium is a inert gas. He is used in air baloon