Dreaming occurs in

The branch of science associated with the prevention,diagnosis,and treatment of mental disorders is called:

Pioneer work on conditioned reflex was done by

In Hydra,neural organization is comprised of:

Arrange the following in the correct sequence in the evolution of the nervous system:
$(a)$ Formation of a centralised nervous system.
$(b)$ Diffused nervous system in $Hydra$.
$(c)$ Formation of a ganglion.
$(d)$ Nervous system is lacking in sponges.

Neural coordination is