Question

Which of the following cannot be considered as a character of differentiation between fishes and amphibians?

• A. Exoskeleton
• B. Non-shelled eggs
• C. Types of appendages
• D. Pulmonary respiration

Answer 1

The correct option is B Non-shelled eggs

The scales of the fishes act as the exoskeleton, while the amphibians does not have any exoskeleton. Also, they have different types of appendages, i.e, fishes have fins, while amphibians have limbs. Also, fishes breathe through gills, unlike amphibians that respirate through lungs.
However, both fishes and amphibians have non-shelled eggs, and hence this cannot be considered as a character of differentiation.