What is the difference between direct and indirect development?
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Direct development |
Indirect development |
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It is a type of development in which an embryo develops into a mature individual without involving a larval stage. |
1. |
It is a type of development that involves a sexually-immature larval stage, having different food requirements than adults. |
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Metamorphosis is absent. |
2. |
Metamorphosis involving development of larva to a sexually-mature adult is present. |
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It occurs in fishes, reptiles, birds, and mammals. |
3. |
It occurs in most of the invertebrates and amphibians. |
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