The venous system of a frog differs from that of a rabbit in the presence of:

The number of cranial nerves in a frog and a human is,respectively:

Select the correct route for the passage of sperms in male frogs.

Select the incorrect statement from the following.

Compared to humans,the red blood cells of a frog are ...........

Select the correct option regarding the respiratory system of a frog:
$(1)$ The glottis is covered by a thin,elastic cartilaginous flap called the epiglottis.
$(2)$ Frogs respire through gills or moist skin.