Question

Teeth in Amphibians are
(a) Homodont, Pleurodont, Diphyodont
(b) Thecodont, Heterodont and Diphyodont
(c) Homodont, Pleurodont and Polyphyodont
(d) Homodont, Thecodont, and Polyphyodont

Answer 1

Hint: Every chordate shows different types of dentition, which depend upon the type of food they eat. Class amphibians consist of a carnivorous animal that feeds on insects and worms by trapping them through the protrusible tongue, and teeth are used to hold the prey only without causing a tear.

Complete answer:
Amphibians have a wide mouth with teeth on both lower and upper jaw directly attached with bone located on the front part of the mouth, these teeth are only incisors types that's why they show homodont dentition. In lizard, teeth are attached to the side of mandibles without a socket which is pleurodont while the rest are acrodont. In amphibians, teeth are replaced from time to time that's why they are also polyphyodont.

Additional Information: Amphibians are the first vertebrate on land to consist of an animal with the limb or without a limb. They live in water and on land both therefore they show a dual-mode of life. The body is cylindrical and divided into head, trunk, and tail. They have two pairs of limbs with four digits In the forelimb and five digits in the hind limb. Skin is moist with a mucous gland without the presence of an exoskeleton. The alimentary canal and reproductive tract open into a common chamber cloaca which opens exteriorly through the cloacal aperture. Respiration takes place through gills, lungs, and skin. The heart is three-chambered with two auricles and one ventricle. The eye is provided with movable eyelids and the ear is without an external ear, only tympanum are present on the surface of the skin. The life cycle consists of the aquatic larva to adult by metamorphosis.
So, the correct answer is Homodont, Pleurodont, and polyphyodont.

Note: Amphibians show advancement over fish with the presence of limbs, eyelids, and ear. The larva of amphibians is similar to fish with the presence of only gills for respiration. Ichthyophis are limbless amphibians similar to a snake, coiling themselves around the egg to protect them.