Question

Which organism has cerebral ganglia in its head connected to ladder-like arrangements of nerve fibers?

A. flatworm

B. frog

C. seahorse

D. spider

Answer 1

The organism that cerebral ganglia in its head connected to ladder-like arrangements of nerve fibers is

A. flatworms

A flatworm is an invertebrate whose central nervous system  or the cerebral ganglia is connected to its body by means of ladder-like nerve cords. 

Answer 2

The answer is:  FLATWORM