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Class Mammalia

Which of the ...

Question

Which of the following belong to the category of amniotes?
I- Penguin
II- Salamander
III- Sea horse
IV- Kangaroo

I and II

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I and III

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II and IV

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I and IV

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II and III

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Solution

The correct option is D I and IV
The presence of fluid-filled sac (amnion) around the embryo during its development is a key feature of amniotes. Amniotes include three groups namely Reptilia, Aves and Mammalia. In the given question, Penguin (Aves), Kangaroo (Mammalia) are amniotes. Salamander (Amphibia) and Seahorse (‎Actinopterygii) are amniotes.
Therefore, the correct answer is option D.

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