NEET BiologyClass 11External features of the frogMediumMatch the following
Match each structure of the frog with its role or description.
Column I
Column II
P. Tympanum
1. Receives sound signals
Q. Nictitating membrane
2. Protects the eye while in water
R. Vocal sacs
3. Sound-producing sacs present only in the male
S. Copulatory pad
4. Present on the first digit of each fore limb of the male
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