During the breeding season, a male frog tightly holds the female in a mating grip. The specific morphological structure that assists the male frog in maintaining this grip is located on the :

Step-by-step solution

During mating, the male frog uses a specialized structure called the copulatory pad to firmly grip the female. According to NCERT, male frogs can be distinguished from female frogs by the presence of a copulatory pad strictly located on the first digit of the forelimbs. Female frogs lack this structure. The webbed digits of the hindlimbs are present in both sexes and are an adaptation for swimming, not for the mating grip. Therefore, the correct anatomical location is the first digit of the forelimbs. Answer: First