Shell of egg is leathery in appearance in___________?
Correct answer: B. Reptiles
- A. Amphibians
- B. Reptiles
- C. Birds
- D. Prototherians
Explanation
Reptile eggs usually have a tough, flexible, leathery shell that reduces water loss while allowing some exchange of gases. Students may choose c because bird eggs also have shells, but bird shells are typically hard and heavily calcified rather than leathery.
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