Question

What gives sperm motility?

Answer 1

In anisogamous forms of sexual reproduction, sperm is the male reproductive cell, or gamete (forms in which there is a larger, "female" reproductive cell and a smaller, "male" one). Animals produce spermatozoa, which are motile sperm with a flagellum tail, whereas red algae and fungi produce spermatia, which are non-motile sperm cells.

Complete answer:
A head, neck, middle piece, and tail make up the sperm. The plasma membrane surrounds the entire sperm body.
The Sperm Structure-
Acrosome apically is found in the head, and it contains enzymes that help sperm enter the ovum. It is followed by an elongated nucleus (haploid)
Multiple mitochondria can be found in the middle piece, which provides energy for sperm movement.
The sperm tail is a flagellum that protrudes from the cell body and is responsible for sperm motility. The tail aids sperm in swimming, allowing them to reach the ovum.
Approximately 200-300 million sperm are ejected all at once.
The ability of sperm to move properly through the female reproductive tract (internal fertilization) or through water (external fertilization) to reach the egg is referred to as sperm motility. Sperm motility, or quality, is a factor in successful conception; sperm that do not "swim" properly will not reach the egg to fertilize it. Sperm motility helps the sperm pass through the cumulus oophorus (a layer of cells) and the zona pellucida (a layer of extracellular matrix) that surrounds the mammalian oocyte in mammals.
The motility of the sperm is controlled by its tail. The sperm is propelled into the female reproductive tract by the tail whipping back and forth. The energy required for the tail's movement is provided by the numerous mitochondria found in the middle piece.

Note:
Sperm aggregate in 'trains' in the wood mouse Apodemus sylvaticus , which are more capable of navigating the vicious environment of the female reproductive tract, and thus better able to fertilize eggs. Trains travel in a sinusoidal pattern. Certain factors released by eggs also have an impact on sperm motility.