Male frogs can be distinguished from female frogs due to the presence of : A. Bulging eyes B. Vocal sacs C. Webbed digits in feet D. Copulatory pad on first digit of fore limbs E. Olive green-coloured skin with dark irregular spots Choose the correct answer from the options given below :
D. B and D only
Male frogs can be distinguished from female frogs by the presence of sound-producing vocal sacs and a copulatory pad on the first digit of the forelimbs. These structures are absent in female frogs. Bulging eyes, webbed digits in feet, and olive green-coloured skin with dark irregular spots are morphological features common to both male and female frogs. Therefore, only statements B and D represent the distinguishing features of male frogs. Answer: B and D only
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