Question

why is breathing in frog is positive pressure breathig?​

Answer 1

This is called positive pressure breathing because the frog actively creates a positive (increased) pressure which is greater than atmospheric pressure in its mouth to establish the air pressure gradient.

Mammals like humans use negative pressure ventilation as opposed to amphibians like frogs that use positive pressure ventilation. Frogs gulp the air and force it in down their throat to breathe.

Answer 2

Breathing in frog is called positive pressure breathing because the frog actively creates a positive (increased) pressure which is greater than atmospheric pressure in its mouth to establish the air pressure gradient.

Hope this will be helpful to you...