Amphibian
An Amphibian is a vertebrate that, with some exceptions, lives in water as larva and on land as an adult, breathes with lungs as an adult, has moist skin that contains mucous glands, and lacks scaled and claws.
Amphibians have a double loops system that carries oxygen-poor blood frm the heart to the lungs and skin, and takes oxygen-rish blood from the lungs and skin back to the heart. The Heart has three seperate chambers.
Fertilized eggs are hatched into tadpoled a few days to sevel weeks. The tadpoles graudally grow limbs, lose their tails and gills, and become meat0eaters as they develop into terrestrial adults. Adult frogs are typically ready to breed in about one or two years. Groups of Amphibians:
Salamanders: Have long bodies and tails. Most have four legs. Both adult and larvae are carnivores.
Frogs and Toads: Ability to jump. Long lenghty legs. Stay near water. Adult frogs lack tails. Caecilians: Legless animals that live in water or burrow in moist soil. Many have fishlike scales in their skin. |
Most adult amphibians, use their front and back legs to move in a variety of ways. The brain of an amphibian has the same basic parts as that of a fish. Have a well developed nervous systen and sensory system.
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