Question

One is not an example of natural reflex. Tick the correct option.

Options

• Blinking of an eye when an insect comes near

• Dripping of saliva from a dog on hearing a bell

• Playing guitar with eyes closed

• Movement of food in oesophagus

Answer 1

Dripping of saliva from a dog on hearing a bell

Explanation:

Salivation on hearing a bell is a conditioned (acquired) reflex, not natural. Natural reflexes are inborn and require no prior learning. Blinking, peristalsis, and eye movements are all natural reflexes. The dog learns to salivate at the bell sound through conditioning (Pavlov's experiment).