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प्रश्न
Differentiate between internal fertilization and external fertilization.
उत्तर
| Internal fertilization | External fertilization |
| It involves the fusion of the male and the female gamete inside the female body. | It involves the fusion of the male and the female gamete outside the female body. |
| Chances of the survival of the offspring are more. Therefore, a small number of eggs are produced. | Chances of survival of the offspring are less. Therefore, a large number of eggs are produced. |
| Humans, cows, hens are organisms showing internal fertilization. | Fish, frog, starfish are organisms showing external fertilization. |
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संबंधित प्रश्न
How does reproduction help in providing stability to populations of species?
Define Reproductive phase
Define Senescent phase.
Describe the process of fertilisation in human beings.
Explain how, in sexually reproducing organisms, the number of chromosomes in the progeny is maintained.
What is formed when two gametes fuse?
Describe the various steps involved in the sexual reproduction in animals. Draw labelled diagrams to show the fertilisation of an ovum (or egg) by a sperm to form a zygote
What would be the ratio of chromosome number between an egg and its zygote?
Name the phenomenon where the female gamete directly develops into a new organism with an avian example.
______ fertilisation takes place in frogs and fish.
