The proctodaeum in a rabbit is:

In frogs,which of the following substances act as neurotransmitters?

Select the incorrect statement regarding excretion in frogs.

Which of the following is not a median part in the brain cavity of frog?

Teeth in frog are:

Choose the correct sentences for a female frog.
$1$. Vocal sacs are absent in female frogs.
$2$. $A$ mature female can lay $2500$ to $3000$ ova at a time.
$3$. In female frogs,fertilized eggs are encased in oothecae and it is a dark reddish to blackish brown.