Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R): 

Assertion (A):	Once initiated, the action potential has a magnitude that is independent of the strength of the triggering stimulus.
Reason (R):	Action potentials are all or none responses to stimuli.

In the light of the above statements choose the correct answer from the options given below:

1.	Both (A) and (R) are True and (R) is the correct explanation of (A).
2.	Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.	(A) is True but (R) is False.
4.	Both (A) and (R) are False.

Assertion: The smaller the size of an axon the higher will be its conduction velocity.
Reason: The smaller the size of an axon the lesser is the resistance to current flow.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R): 
 

In the light of the above statements choose the correct answer from the options given below:
 

Assertion: Sympathetic and parasympathetic divisions bring about opposite effects in organs innervated by them.
Reason: The preganglionic neurons of the two subdivisions release different neurotrnasmitters.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false

Assertion: Nerve gas Sarin and agricultural insecticide Parathion can cause severe spastic paralysis in humans.
Reason: Sarin and Parathion act as inhibitors of the enzyme choline acetyl transferase.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.

Assertion: Nicotine binds directly to the receptors on the postsynaptic neurons of the brain.
Reason: Any chemical occurring in the brain will naturally have receptors on the neurons.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R): 

 
In the light of the above statements choose the correct answer from the options given below:

Assertion: A person with damage to Broca’s speech area in the left hemisphere may not be able to speak but may retain the ability to sing.
Reason: The left hemisphere is the dominant hemisphere for language in majority of the human beings.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.

Assertion: Spinal cord segments do not correspond to vertebral segments in the adult, particularly in the lower spinal cord.
Reason: The vertebral column grows longer than the spinal cord.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R): 

In the light of the above statements choose the correct answer from the options given below: