Which cranial nerve has the largest number of branches?

The trigeminal nerve ($V$ cranial nerve) arises from the brain in the region of

Given below are two statements with respect to the limbic system.
Statement $I$: The limbic system is responsible for emotional reactions and memory.
Statement $II$: It is formed mainly of the cerebrum,pons varolii,and cerebellum.
Choose the most appropriate answer from the options given below.

Ramus communicans contains . . . . . . nerve fibres.

The vomiting centre is situated in

If the cerebral hemisphere of a frog is removed,it: