Question

Amplexor or nuptial pad is present in the male frog over:
(A) Index finger
(B) Little finger
(C) Hallux
(D) Outer toe

Answer 1

Hint: In different organisms, different mode of organs are required for mating. The mating in frog is known as amplexus. In case of frog, amplexus is maintained by amplxory or nuptial pad. This amplexory or nuptial pad helps male frogs to grasp the female frog during amplexus.

Complete answer:
Mating is the pre- fertilization requirement for the zygote formation in many organisms. This mating allows the transfer of male gametes from male sex to the female sex. Hence mating is the important criteria in sexual reproduction.
Different organisms use different modes of mating methods. In the case of frogs, mating is known by another name as amplexus.
Amplexus is carried by means of nuptial pad or amplexory pad which is found in male frogs only. It is not found In the female frog. Male frogs grasp the female frog by means of this amplexory or nuptial pad. This structure is found on the index finger.

That’s why the right answer is: “Option A”.

Additional information: Male and female frogs are differ due to following characteristics:
Vocal sacs are present in male frogs only. It is not found in female frogs. Male frogs produce sounds of high pitch in breeding season for calling females.
Nuptial pad is present in male frog in the index finger. It is not found in females. When a female is attracted by a high pitch of sound, then male grasps the female by means of a nuptial pad.
Female frogs are significantly larger in size as compared to the male frog.

Note: Male frogs have an additional structure in their body as compared to female frogs. That structure is known as an amplexory pad which is present on the index finger of male. This structure is responsible for grasping the female frog during the mating period. The mating in frogs is known as amplexus.