Mon Prof Augmenté
Sperm Meets Egg
Age 12 · Biology
A sperm cell joins with an egg cell to make one new cell. That cell divides into a small ball, which settles into the soft wall of the uterus.
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In the picture
- Sperm head at the egg surface: the sperm is touching the egg and ready to join.
- Egg cell: the large round cell that the sperm joins with.
- Dividing ball of cells: the first cells formed after the egg and sperm become one.
- Uterus lining: the soft wall where the ball of cells settles.
Examples
- A flower’s egg cell starts a seed after pollen joins it.
- A hen’s egg cell starts to develop after a rooster’s sperm joins it.
Key takeaways
- Fertilisation makes one new cell from a sperm and an egg.
- The new cell divides and then implants in the uterus wall.
Quiz: Sperm Meets Egg (Age 12)
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What happens during fertilisation?
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After fertilisation, what does the new cell do next?
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Where does the ball of cells settle after it forms?
The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.
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