$\ldots \ldots \ldots$ is not involved in knee-jerk reflex.

What is a reflex action?

The various components of a reflex arc are given below:
$i.$ Effector organ
$ii.$ Interneuron
$iii.$ Motor neuron
$iv.$ Sensory neuron
$v.$ Sensory receptors
Choose the correct sequence of action potential transmission after the sensory receptors are stimulated.

If the dorsal root of a spinal nerve of a mammal is cut and an associated receptor in the skin is stimulated,what will happen to the animal?

Select the correct option for the reflex arc.

If the light source in front of an eye becomes bright suddenly,what happens?