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
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