Question

Bull frog of India is
A. Rana tigrina
B. R. Sylvatica
C. R. Ecutesbeiana
D. R. Esculenta

Answer 1

Frogs are members of class Amphibia. Amphibians are cold-blooded vertebrate animals surviving in a moist environment. They're ectothermic therefore cannot regulate their own body heat, so they rely upon sunlight to become warm and active.

Complete Answer:
Hoplobatrachus tigerinus , the Indian bullfrog (Asian bullfrog) is also known as Rana tigrina. It is solitary and nocturnal in nature which inhabits holes, bushes near water sources. They do not stay in water for a long time therefore spend most of its time hiding and feeding in surrounding vegetation.
Scientific Name: Hoplobatrachus tigerinus
Common Names: Bullfrog, Golden Frog, Green Frog, etc.

These are distributed within the Indian sub-continent. These are solitary and nocturnal in nature. Their coloration varies from green to olive/brown with a white to yellowish belly and dark-barred legs. Large adults weigh 0.5 kilogram or more. They usually breed in early summer. The eggs are laid in water and get hatched into dark-spotted greenish brown tadpoles. Betting on climate, the tadpole stage lasts one to 3 years. Many bullfrogs are caught for food.

It is native to the Indian subcontinent and is the largest frog in India. These are prolific breeders, and have short breeding seasons. Indian bullfrogs are carnivorous which also feed on other tadpoles. The tadpoles grow to be the biggest and also grow the fastest. Adult bullfrogs pose a threat to small endemic vertebrates because they'll eat everything which inserts into their mouths like centipedes, leeches, native frogs, lizards, small snakes and even chicks and ducklings. Bullfrogs eat the native frogs similarly and their diets overlap, indicating a prospect of competition.

The correct option is A,Rana tigrina.

Note: They are invasive species on the islands of Andaman and Nicobar. An invasive species may be a species that's accidentally or artificially introduced into a biosphere where it's not normally found. In the absence of a natural predator, the invasive species thrive and causes economic and environmental damage thanks to the imbalance created by its introduction.