Question

What happens to a spermatid to change it into a sperm cell?

O Meiosis occurs, making a cell with n chromosomes.
The nuclei of two polar bodies fuse, making a cell with 2n chromosomes.
O A tail is added, making the sperm a motile cell.
O Amembrane hardens, making the sperm a nonmotile cell.

Answer 1

A tail is added, making the sperm a motile cell.

Sperm does not become spermatozoa (what we think of when we think of sperm) until the formation of the tail.