Question

Why is the vocal sac found only the male frog?

Answer 1

hey User !!!


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here's your answer....



Vocal sac is the flexible membrane of skin .

This helps the male frog , when they call their throat reigion usually expands as theier vocal sac fills with air amplifying their call.
Because of this , when not calling males tend to have obviously thin, baggy skin on their throat.



hope this helps you....

Answer 2

Hello Friend....☺
The vocal sac is the flexible membrane of skin possessed by most male frogs. ... The presence or development of the vocal sac is one way of externally determining the sex of a frog in many species. The vocal sac is open to the mouth cavity of the frog, with two slits on either side of the tongue.