Question

Male Frog can be distinguished from female by

• A. Nuptial pad
• B. Vocal sacs
• C. Narrow abdomen
• D. All of the above

Answer 1

The correct option is D All of the above

Males of frog species develop spiny nuptial pads with underlying glands on their thumbs during the mating period. The vocal sac is the flexible membrane of skin possessed by most male frogs. The purpose of the vocal sac is usually as an amplification of their mating or advertisement call, which is present in only male frogs. Male frogs have a narrow abdomen than in female frogs. Hence the nuptial pad, vocal sacs, and narrow abdomen are seen in male frogs which is a distinguishing character from females.

So the correct answer is 'All of the above'.