In This Post we are  providing Chapter-21 Neural Control and Coordination NCERT MCQ for Class 11 Biology which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MCQ ON NEURAL CONTROL AND COORDINATION

Question 1 :  Which one of the following does not act as a neurotransmitter ?

• a) Cortisone
• b) Epinephrine
• c) Acetylcholine
• d) Norepinephrine

Answer : Cortisone

Question 2 : The cochlea of ear contains

• a) perilymph and endolymph
• b) only endolymph
• c) aqueous humour
• d) perilymph

Answer : perilymph and endolymph

Question 3 : Eustachian tube connects

• a) Middle ear with pharynx
• b) Internal pharyax
• c) External ear with internal ear
• d) External ear with middle ear

Answer : Middle ear with pharynx

Question 4 : Mark the incorrect statement

• a) Opsin (of Rhodopsin) develops from vitamin A
• b) The pressure on ear drum is equalized by eustachian tube
• c) Otolith organ consists of saccule and utricle
• d) None of these

Answer : Opsin (of Rhodopsin) develops from vitamin A

Question 5 : Frequency of sound is discriminated by

• a) The site at the cochlear coi
• b) All of these
• c) The type of fluid – perilymph or endolymph
• d) The intensity of movement of basilar fibres of cochlea

Answer : The site at the cochlear coi

Question 6 : Saltatory conduction of nerve impulse takes place through

• a) Myelinated fibre
• b) Non-myelinated fibre
• c) Grey fibres
• d) None of these

Answer : Myelinated fibre

Question 7 : Among which one of the following groups of chemicals, all are neurotransmitters?

• a) Acetylcholine, noradrenaline, dopamine
• b) Noradrenaline, somatostatin, threonine
• c) Somatostatin, serotonin, acetylcholine
• d) Glycine, dopamine, melatonin

Answer : Acetylcholine, noradrenaline, dopamine

Question 8 : The enzyme required for the conduction of nerve impulse across synapse is

• a) choline acetylase
• b) succinic dehydrogenase
• c) peroxidase
• d) ascorbic acid oxidase

Answer : choline acetylase

Question 9 : The purplish red pigment rhodopsin contained in the rods type of photoreceptor cells of the human eye, is a derivative of

• a) Vitamin A
• b) Vitamin B₁
• c) Vitamin D
• d) Vitamin C

Answer : Vitamin A

Question 10 : During stress condition which of the following nerves start working?

• a) Sympathetic nerves
• b) Parasympathetic nerves
• c) Autonomic nerves
• d) Cranial nerves

Answer : Sympathetic nerves

Question 11 : The gelatinous membrane covering the sensory hair cells of the ear is known as

• a) tectorial membrane
• b) Reissner’s membrane
• c) basilar membrane
• d) neuro-sensory membrane

Answer : tectorial membrane

Question 12 : Nerve cells do not divide because they do not have

• a) centrosome
• b) mitochondria
• c) nucleus
• d) Golgi body

Answer : centrosome

Question 13 : The local depolarization of a receptor-cell membrane is called as

• a) action potential.
• b) resting potential
• c) threshold potential
• d) None of these

Answer : action potential.

Question 14 : You are sitting in biology class daydreaming. Your intrinsic heartbeat is controlled by

• a) levels of adrenaline in the blood.
• b) the medulla
• c) the cerebrum
• d) the spinal cord

Answer : levels of adrenaline in the blood.

Question 15 : The threshold of a neuron is

• a) The membrane voltage at which the membrane potential develops into an action potential
• b) the amount of excitatory neurotransmitter required to elicit an action potential
• c) The membrane voltage at which an axon potential will be suppressed
• d) The amount of inhibitory neurotransmitter required to inhibit an action potential.

Answer : The membrane voltage at which the membrane potential develops into an action potential