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What is the difference between external and internal fertilization?
Difference between internal and external fertilization are as follows:
| Internal Fertilization | External Fertilization |
| Fertilization takes place inside the female's body. | Fertilization takes place outside the female's body. |
| Male gametes are deposited inside or near female's reproductive tract and fertilization occurs inside the organ. | Eggs are released by female organisms into the environment and outside, they fertilize with the male's sperm or male gamete. |
| The number of gametes produced in internal fertilization is less as fertilization takes place effectively inside the body. | As fertilization chance is less in the water environment, a large number of gametes are released. |
| Animals with internal fertilization process completely live their life on land. | Animals with external fertilization either live in water permanently or move to water for the reproduction process. |
| Examples: Mammals, Birds, Reptiles, etc. | Examples: Fish, Amphibians, etc. |
Updated on: 20-Mar-2023
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