Question

Assertion:

After hearing a sound, nerve impulses pass through the neurons to the brain.
Reason:

The neurons which carry nerve impulses from the body organs to the brain are called afferent neurons.

• A. Both the assertion and the reason are true and the reason is the correct explanation of the assertion.
• B. Both the assertion and the reason are true and the reason is not the correct explanation of the assertion.
• C. The assertion is true and the reason is false.
• D. The assertion is false but the reason is true.
  
• E. Both the assertion and the reason is false.
  

Answer 1

The correct option is B Both the assertion and the reason are true and the reason is not the correct explanation of the assertion.

• The activities of the sensory organs are related to two types of neurons (afferent and efferent).
• When the body receives an impulse, a signal is generated at the point of impact, which is sent to the brain through the neurons. The neurons, which pass nerve impulses from the body organ to the brain, is called an afferent neuron.
• When it reaches the brain, it sends back a signal through the neurons to provide a reaction for a certain action. The neurons, which carry the nerve impulses from the brain to the body organs, are called efferent neurons.

So, the correct answer is option B.