Part 8: Integrated & Miscellaneous NEET-level Practice Questions
Part 8 (25 MCQs) on Integrated & Miscellaneous NEET-level Questions – Assertion-Reason, Application-based, Mixed Difficulty from Chapter 21 – Neural Control and Coordination (NCERT Class 11 + NEET UG).
Part 8: Integrated & Miscellaneous NEET-level Practice Questions
Q1. Assertion (A): Myelin sheath increases conduction speed.
Reason (R): It allows continuous conduction of impulse.
a) Both A and R true; R correct explanation
b) Both A and R true; R not correct explanation
c) A true; R false
d) Both false
Answer: c) A true; R false
- ✅ Myelin → saltatory conduction, not continuous.
Q2. Which cranial nerve controls eye movement and pupil reflex?
a) Optic nerve
b) Oculomotor nerve
c) Vagus nerve
d) Trigeminal nerve
Answer: b) Oculomotor nerve
- ✅ Oculomotor (III) → eye muscles + pupil reflex.
Q3. Assertion (A): Knee-jerk reflex is monosynaptic.
Reason (R): It involves interneurons in spinal cord.
a) Both true; R correct
b) Both true; R incorrect
c) A true; R false
d) Both false
Answer: c) A true; R false
- ✅ Knee-jerk has no interneuron → direct sensory-motor.
Q4. Deficiency of Vitamin A affects:
a) Colour vision
b) Night vision
c) Hearing
d) Smell
Answer: b) Night vision
- ✅ Rods require rhodopsin (needs vitamin A).
Q5. Which neurotransmitter deficiency is linked to Parkinson’s disease?
a) Acetylcholine
b) Serotonin
c) Dopamine
d) GABA
Answer: c) Dopamine
- ✅ Dopamine deficiency in substantia nigra → Parkinson’s.
Q6. Assertion (A): Sympathetic system dilates pupils.
Reason (R): Parasympathetic system causes pupil constriction.
a) Both A and R true; R correct explanation
b) Both true; R not correct explanation
c) A true; R false
d) Both false
Answer: a) Both A and R true; R correct explanation
Q7. Conditioned reflex was first demonstrated by:
a) Sherrington
b) Pavlov
c) Golgi
d) Darwin
Answer: b) Pavlov
- ✅ Pavlov’s dog → conditioned reflex.
Q8. The semicircular canals detect:
a) Static equilibrium
b) Dynamic equilibrium
c) Hearing
d) Vision
Answer: b) Dynamic equilibrium
- ✅ Semicircular canals → angular acceleration.
Q9. Assertion (A): White matter in spinal cord is composed of myelinated axons.
Reason (R): Myelin imparts whitish appearance.
a) Both true; R correct explanation
b) Both true; R incorrect explanation
c) A true; R false
d) Both false
Answer: a) Both true; R correct explanation
Q10. Which part of brain regulates body temperature, hunger, and thirst?
a) Thalamus
b) Hypothalamus
c) Medulla
d) Cerebellum
Answer: b) Hypothalamus
- ✅ Hypothalamus = homeostasis center.
Q11. Assertion (A): The blind spot has no photoreceptors.
Reason (R): It corresponds to the exit point of optic nerve.
a) Both true; R correct explanation
b) Both true; R not correct explanation
c) A true; R false
d) Both false
Answer: a) Both true; R correct explanation
Q12. Which neurotransmitter is inhibitory in CNS?
a) Dopamine
b) GABA
c) Acetylcholine
d) Norepinephrine
Answer: b) GABA
- ✅ GABA = major inhibitory neurotransmitter.
Q13. Assertion (A): Sympathetic system increases heart rate.
Reason (R): It prepares body for fight-or-flight.
a) Both true; R correct explanation
b) Both true; R incorrect explanation
c) A true; R false
d) Both false
Answer: a) Both true; R correct explanation
Q14. Which lobe of brain controls voluntary movements?
a) Parietal
b) Frontal
c) Occipital
d) Temporal
Answer: b) Frontal
- ✅ Frontal lobe houses motor cortex.
Q15. Assertion (A): Utricle and saccule detect linear acceleration.
Reason (R): They contain macula with hair cells.
a) Both true; R correct explanation
b) Both true; R incorrect explanation
c) A true; R false
d) Both false
Answer: a) Both true; R correct explanation
Q16. The reflex arc is:
a) Voluntary
b) Involuntary, automatic pathway
c) Always monosynaptic
d) Without receptors
Answer: b) Involuntary, automatic pathway
- ✅ Reflex arc = involuntary protective response.
Q17. Assertion (A): Organ of Corti is responsible for hearing.
Reason (R): It contains rods and cones.
a) Both true; R correct
b) A true; R false
c) Both false
d) A false; R true
Answer: b) A true; R false
- ✅ Organ of Corti = hearing (hair cells), not rods/cones.
Q18. Myopia is corrected by:
a) Convex lens
b) Concave lens
c) Cylindrical lens
d) Bifocal lens
Answer: b) Concave lens
- ✅ Myopia → short-sightedness → corrected with concave lens.
Q19. Assertion (A): Sympathetic system causes bronchodilation.
Reason (R): This increases oxygen supply during stress.
a) Both true; R correct explanation
b) Both true; R incorrect explanation
c) A true; R false
d) Both false
Answer: a) Both true; R correct explanation
Q20. The cranial nerve responsible for smell is:
a) Optic
b) Olfactory
c) Facial
d) Glossopharyngeal
Answer: b) Olfactory
- ✅ Olfactory nerve (I) → smell.
Q21. Assertion (A): Rod cells are more numerous than cone cells.
Reason (R): They are more sensitive to dim light.
a) Both true; R correct explanation
b) Both true; R incorrect explanation
c) A true; R false
d) Both false
Answer: a) Both true; R correct explanation
Q22. The nerve impulse travels fastest in:
a) Thin unmyelinated fibers
b) Thick myelinated fibers
c) Dendrites
d) Gray matter
Answer: b) Thick myelinated fibers
- ✅ Saltatory conduction in thick myelinated axons = fastest.
Q23. Assertion (A): Corpus callosum connects two cerebral hemispheres.
Reason (R): It helps coordinate left and right brain activities.
a) Both true; R correct explanation
b) Both true; R incorrect explanation
c) A true; R false
d) Both false
Answer: a) Both true; R correct explanation
Q24. Which structure of ear detects angular acceleration of head?
a) Utricle
b) Semicircular canals
c) Cochlea
d) Saccule
Answer: b) Semicircular canals
- ✅ Semicircular canals → detect dynamic balance.
Q25. Assertion (A): Sympathetic stimulation decreases digestion.
Reason (R): It diverts blood to skeletal muscles.
a) Both true; R correct explanation
b) Both true; R incorrect explanation
c) A true; R false
d) Both false
Answer: a) Both true; R correct explanation
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