(i) Following characteristics distinguish amphibians from pisces:
1. Amphibians lack scales whereas skin of pisces are covered with scales.
2. Amphibians have mucous glands.
3. Amphibians have a three-chambered heart unlike pisces, their hearts have only two chambers.
(ii) Cold-blooded: Shark, Rohu, Lizard
Warm-blooded: Sparrow