Amnion is not present around the embryo of:
Correct answer: B. Amphibian
- A. Reptiles
- B. Amphibian
- C. Birds
- D. Mammals
Explanation
In amphibians, the embryo is not surrounded by an amnion. The amnion is a membrane that forms a fluid-filled sac around the embryo in reptiles, birds, and mammals. This fluid-filled sac provides protection and helps regulate the embryo's temperature. However, in amphibians, this structure is absent, making option B the correct choice.
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