NEET 2026
- Exam
- NEET
- Year
- 2026
- Subject
- Biology
- Chapter
- Chapter
NEET 2026 · Biology · Chapter
In Rana tigrina , which of the following external morphological...
In Rana tigrina, which of the following external morphological features is exclusively present in males and helps in distinguishing them from females?
Options
- AMembranous tympanum on either side of the eyes
- BSound producing vocal sacs
- CWebbed digits in the hind limbs
- DNictitating membrane covering the eyes
Correct answer
B. Sound producing vocal sacs
Step-by-step solution
In Rana tigrina (Indian bullfrog), 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.
Membranous tympanum, webbed digits in the hind limbs, and nictitating membrane are present in both male and female frogs.
Answer: Sound producing vocal sacs
Membranous tympanum, webbed digits in the hind limbs, and nictitating membrane are present in both male and female frogs.
Answer: Sound producing vocal sacs