Gametes and Fertilisation Flashcards

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What are gametes?

Gametes are reproductive cells responsible for sexual reproduction: eggs (ova) in females and sperm in males.

How does fertilisation occur?

Fertilisation occurs when the male gamete (sperm) and female gamete (egg) combine, fusing their nuclei and genetic information.

What is the role of the sperm’s tail (flagellum)?

The sperm’s tail (flagellum) helps it swim towards the egg, increasing the chances of fertilisation.

How does the egg cell prevent multiple sperm from entering after fertilisation?

The egg cell’s outer layer hardens after fertilisation to prevent additional sperm from entering.

Why are millions of sperm produced during ejaculation?

Millions of sperm are produced to increase the chances that at least one will successfully reach and fertilise the egg.

Revision Notes
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