Question

Which of the following is called the larva of a frog?
A. Nymph
B. Tadpole
C. Caterpillar
D. Fry

Answer 1

Hint: The frog belongs to class amphibians which fertilization is external. Female frog releases eggs into the water where they fertilize with the sperms. The larval stages of the frog develop in the water.

Complete answer: External fertilization occurs in the frog where the frog’s egg is covered by a coat of jelly. Frog develops from a fertilized egg through a tadpole stage. The young one hatches to form an aquatic larval stage known as a tadpole.
It has a tail and internal gills. This transformation occurs through the process of metamorphosis. During metamorphosis, tadpoles start developing front and back legs.
The tadpole develops into a froglet. The body shrinks and the lungs develop.
The tail is absorbed in the body through the process of apoptosis.

Tadpoles have a notochord and a cartilaginous skeleton. They are globular in shape and have spiracles that help in the exit of water through the opercular chamber.

Additional information: Many tadpoles are used as food.
Tadpoles of megophryidae frog Oreolalax rhodostigmatus are generally large, more than 10 cm (3.9 in) in length, and are gathered for human consumption in China.
In India, Clinotarsus curtipes are obtained for food.

Hence, the correct option is (B) Tadpole.

Note: Tadpole is also known as polliwog which is an aquatic larval stage of frogs and toads. Most of the tadpoles are vegetarian but some species are carnivorous.
Tadpoles are short with oval bodies as compared to larvae of salamanders.