Draw a neat well labelled diagram of the human sperm. Also, write how its shape and size help it in its functioning?


A sperm is smaller in size than the ovum and can only be seen through a microscope. Each sperm cell has three parts: a head, a middle piece and a tail. A structure, at the tip of the head, produces enzymes that help the sperm to penetrate the female ovum.

DAV Class 8 Science Chapter 14 question answer Reproduction in Animals