Question

The character that proves that frogs have evolved from fishes is ?

• A. The ability to swim in water
• B. The tadpole larva in frogs which resembles the fishes in many characters
• C. Similarity in the shape of the head
• D. None of the above

Answer 1

The correct option is B The tadpole larva in frogs which resembles the fishes in many characters

A frog is the member of the class amphibians. Frogs lay their eggs in the water, where external fertilization occurs like fishes. Generally, the amphibian egg is surrounded by a coat of jelly but not by a shell. The young hatch into an aquatic larva called tadpoles that have tails and internal gills. The larvae usually undergo metamorphosis and develop into a terrestrial adult. Amphibians are ectothermic like fish. They depend upon external heat to regulate their body temperature. If the environmental temperature becomes too low, ectotherms become inactive.

So, the correct answer is option B.