Question

Why are so many sperm necessary in a single ejaculate?

Answer 1

Heya!

Redundancy—the excess of supply over necessity—has recently been proposed for human sperm cells. However, the apparent superfluity of cell numbers may be necessary in order to circumvent the hazards, many of which can be quantified, that can occur during the transition from gametogenesis within the testes to zygosis within the female reproductive tract. Sperm cell numbers are directly related to testicular volume, and it is owing to a redundancy, and the possible exaptation, of this latter parameter that a putative excess of sperm cells is pereived.

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Answer 2

Sexual reproduction is a chance event i.e., egg may or may not be fertilized by that gamete .To fertilize egg only one male gamet is required but to ensure fertilization large number of male gamets are released.

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