why does a sperm cell have a tail ?
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Sperm, also called spermatozoon, plural spermatozoa, male reproductive cell, produced by most animals. With the exception of nematode worms, decapods (e.g., crayfish), diplopods (e.g., millipedes), and mites, sperm are flagellated; that is, they have a whiplike tail. In higher vertebrates, especially mammals, sperm are produced in the testes. The sperm unites with (fertilizes) an ovum (egg) of the female to produce a new offspring. Mature sperm have two distinguishable parts, a head and a tail.
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- The tail gives the sperm cell movement.
It whips and undulates so that the cell can travel to the egg.
- The membrane of the sperm cell then fuses with that of the egg, and the sperm nucleus is conveyed into the egg.
Sperm deposited in the reproductive tract of the female that do not reach the egg die.
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