Difference between revisions of "Reproduction in Animals"
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Revision as of 14:10, 24 August 2018
Key Stage 2
Meaning
Reproduction in animals is when one or two animals produce offspring.
About Reproduction in Animals
- Most animals need two adults to produce offspring. This is called 'sexual' reproduction.
- Some animals can reproduce on their own. This is called 'a-sexual' reproduction.
Sexual Reproduction
- Sexual reproduction is when two adults are needed to create one or more offspring.
- In sexual reproduction of animals two adult animals will mate.
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| When amphibians mate the female lays eggs and the male gives out sperm to fertilise the eggs. | When birds mate the male puts sperm inside the female and then the female lays eggs afterwards. | When fish mate the female lays eggs and the male gives out sperm to fertilise the eggs. |
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| When some insects mate the male puts sperm inside the female and then the female lays eggs afterwards. | When mammals mate the male puts sperm inside the female and then the female becomes pregnant. She then gives birth to the offspring. | When reptiles mate the male puts sperm inside the female and then the female lays eggs afterwards. |