Correct option is B
The correct answer is Reptilia.
Reptile:
· Reptiles are mostly terrestrial animals and their body is covered by dry and cornified skin, epidermal scales or scutes.
· They do not have external ear openings.
· Limbs, when present, are two pairs.
· The heart is usually three-chambered, but four-chambered in crocodiles.
· Fertilisation is internal.
· They are oviparous and development is direct.
· Examples: Chelone (Turtle), Testudo (Tortoise), Chameleon (Tree lizard), Calotes (Garden lizard), Crocodilus (Crocodile) etc.
Thus, the crocodile belongs to the reptilia class of animal kingdom.
Information Booster
Crocodile:
· Crocodile belongs to the kingdom Animalia, phylum Chordata, and class reptilia.
· Crocodiles have short legs with clawed webbed toes, strong jaws, and many conical teeth.
Additional Information
Aves:
· The characteristic features of Aves (birds) are the presence of feathers and most of them can fly except flightless birds.
· The forelimbs are modified into wings.
· Skin is dry without glands except for the oil gland at the base of the tail.
· Examples: Corvus (Crow), Columba (Pigeon), and Psittacula (Parrot).
Amphibia:
· Amphibians can live in aquatic as well as terrestrial habitats.
· Most of them have two pairs of limbs.
· The body is divisible into the head and trunk.
· Respiration is by the gills, lungs and skin.
· The heart is three-chambered.
· Examples: Bufo (Toad), Rana (Frog), and Hyla (Tree frog).
Pisces:
· This species is mainly found in brackish fresh and marine water.
· The body is divided into head three-part heads, trunk and tail.