Reptiles are different from amphibians in

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(D) Reptiles differ from amphibians in several key aspects:$1$. Skin: Amphibians possess smooth,moist skin that lacks scales,whereas reptiles have dry

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(D) Reptiles differ from amphibians in several key aspects:$1$. Skin: Amphibians possess smooth,moist skin that lacks scales,whereas reptiles have dry,cornified skin covered by epidermal scales or scutes.$2$. Heart Structure: Most amphibians have a $3$-chambered heart ($2$ atria and $1$ ventricle). In contrast,most reptiles have a $3$-chambered heart,but it is partially divided,and crocodilians possess a $4$-chambered heart,representing a more advanced circulatory system.$3$. Development Stages: Amphibians typically undergo metamorphosis,often involving an aquatic larval stage (e.g.,tadpole). Reptiles exhibit direct development,where the young resemble the adults and do not undergo a larval stage.

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