NEETZoologyStructural Organisation in Animals
Which of the following combinations of characteristics correctly describes a male frog?
Options
- APresence of vocal sacs, and separate ureters and oviducts opening into the cloaca
- BPresence of a copulatory pad on the first digit of the forelimbs, and ureters acting as a urinogenital duct
- CAbsence of vocal sacs, and ureters acting as a urinogenital duct
- DPresence of a copulatory pad on the first digit of the hindlimbs, and the presence of vasa efferentia
Correct answer
B. Presence of a copulatory pad on the first digit of the forelimbs, and ureters acting as a urinogenital duct
Step-by-step solution
To identify a male frog, both external morphological and internal anatomical features must be correctly matched. Externally, male frogs possess vocal sacs for sound production and a copulatory pad on the first digit of the forelimbs. Internally, in male frogs, the ureters act as a common urinogenital duct which opens into the cloaca, and they possess vasa efferentia. Option 1 incorrectly pairs a male external feature (vocal sacs) with a female internal feature (separate ureters and oviducts). Option 3 incorrectly p