Regulation and coordination by cells = $P$
Regulation and coordination by chemicals = $Q$
Select the correct option for $P$ and $Q$.
$\quad\quad \quad P\quad\quad\quad Q$

By which nervous system and of what type,the blood is supplied into visceral organs?

Give a brief account of
$(a)$ Mechanism of synaptic transmission
$(b)$ Mechanism of vision
$(c)$ Mechanism of hearing

Match the following:
$A.$ Reflex action $1.$ Involuntary action
$B.$ Multipolar $2.$ Neuron
$C.$ $Na^+$ and $K^+$ ions $3.$ Parasympathetic nervous system
$D.$ Increases secretion of saliva and digestive juices $4.$ Reflex action
$E.$ Knee jerk $5.$ Active transport
The correct sequence for $A, B, C, D, E$ is:

Neurosis is characterised by

Match the following:
Receptors | Stimuli
$A.$ Statoreceptors | $1.$ Frequencies of vibrations
$B.$ Gustatory receptors | $2.$ Hunger and thirst
$C.$ Enteroreceptors | $3.$ Taste
$D.$ Mechanoreceptors | $4.$ Equilibrium
The correct pairing sequence is: