Name: Class Mammalia and Its Characteristics
Uploaded: 2019-07-19
Duration: 4 min 10 s
Description: "Endoskeleton is common among all my creatures; mammary glands are one of my key features! Who am I?" Watch and find out for yourself! Are you ready?

Question

Give salient features of the class Amphibia.

Accepted Answer

Amphibians are the tetrapod vertebrates that can live on land as well as in water. These include frogs, toads, salamanders, and caecilians. They were the first land-dwelling vertebrates. Their characteristic features are as follows:

The body is divided into the head and trunk.

The skin is moist, smooth, and highly vascular which helps in cutaneous respiration.

Two pairs of pentadactyl limbs.

A well-developed digestive system with teeth in the upper and lower jaw. The true tongue was found for the first time.

Respiration occurs by the gills, skin, buccopharyngeal cavity, and lungs.

Three chambered heart with two auricles and one ventricle.

Mesonephric kidney for excretion.

Sexes are separate, external fertilisation occurs.

Indirect development with an aquatic tadpole larva in their life cycle.

Examples: Rana tigrina, Bufo, Hyla, Rhacocarpus, Salamandra, Ambystoma, Icthyophis.

Give salient features of the class Amphibia.

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