With a suitable diagram explain reflex action and reflex arc

Reflex action is the sudden uncontrolled reaction towards a certain stimuli eg response to hot iron

Reflex arc is the path taken by reflex action to a certain stimuli

Diagram depends to

Receptor (eg skin), receptor nerve (sensory neurone), centre reflex arc (spinal cord most of reflex action) they met relay neurone, motor neurone and ends at reflexor (eg muscle)