Extra embryonic membranes like amnion and chorion appeared for the first time in
Correct answer: C. Reptiles
- A. Fish
- B. Amphibian
- C. Reptiles
- D. None
Explanation
Extra embryonic membranes like amnion and chorion appeared for the first time in reptiles. The amnion is a membrane that surrounds and protects the embryo, providing a fluid-filled cavity for its development. The chorion is another extra embryonic membrane that allows for gas exchange with the environment.
This question appeared on the ETEA MDCAT 2010 paper, which you can sit online with every answer explained.
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About Embryonic Development
Embryonic development begins after fertilization with cleavage and formation of the morula and blastula, followed by gastrulation and the establishment of germ layers. It includes organ formation, tissue differentiation and early growth, rather than the later increase in size associated with postnatal development.
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