Describe the two types of fertilization seen in organisms
Answer:
- When the haploid male gamete fuses with the haploid female gamete to form diploid zygote , it is known as fertilization.
- Depending upon the type of place of fusion , fertilization is of two types– Internal fertilization and External fertilization .
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External fertilization |
Internal fertilization |
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1. Fertilization occurs outside the body of a female organism.
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1. Fertilization occurs inside the body of a female organism. |
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2. Both sexes discharge their gametes outside their body. |
2. Male releases the gametes into the female reproductive tract and the female retains its egg. |
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3. Large numbe r of gametes are produced.
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3. Less number of gametes are produced. |
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4. Shows high survival rate of embryo .
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4. Shows low survival rate of embryo and egg. |
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5. Embryo develops unprotected, outside the mothers body |
5. Embryo is well protected , but may develop outside or inside the mothers body |
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6. For example, Fish, Amphibians. |
6. For example Reptiles, Mammals, etc |
