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Biology · STRUCTURAL ORGANISATION IN ANIMALS

हिन्दी

Male frogs can be distinguished externally from female frogs by the presence of:

  1. Nictitating membrane and tympanum
  2. Webbed feet and olive green skin
  3. Copulatory pad on the fourth digit of hindlimbs
  4. Vocal sacs and a copulatory pad on the first digit of forelimbs

Correct answer · Option 4

Vocal sacs and a copulatory pad on the first digit of forelimbs

Explanation

Male frogs exhibit sexual dimorphism by the presence of sound-producing vocal sacs and a copulatory pad on the first digit of the forelimbs.
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