NCERT Class 11 Chapter 21 Biology Neural Control and Coordination Movement MCQ

NCERT Class 11 Chapter 21 Biology Neural Control and Coordination Movement MCQ | Questions & Answers: Candidates who are interested to know new concepts about the Class 11 Chapter 21 Biology Neural Control and Coordination Movement can take a look at this article. Here we have provided the MCQ Online Quiz that can be very productive for you to learn about it.

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1. Rods and cones of eyes are modified

A. bipolar neuron

B. multipolar neuron

C. unipolar neuron

D. None of these

2. The nerve transmitter, produced at the synapse and neuromuscular junction, is

A. acetylcholine

B. GTP

C. ATP

D. phosphokinase

3. Alzheimer disease in humans is associated with the deficiency of

A. acetylcholine

B. glutamic acid

C. dopamine

D. None of these

4. The black pigment in the eye which reduces the internal reflection is located in

A. retina

B. cornea

C. iris

D. sclerotic

5. Which one of the following does not act as a neurotransmitter ?

A. Cortisone

B. Epinephrine

C. Acetylcholine

D. Norepinephrine

6. The cochlea of ear contains

A. perilymph and endolymph

B. only endolymph

C. aqueous humor

D. perilymph

7. Eustachian tube connects

A. Middle ear with pharynx

B. Internal pharyax

C. External ear with internal ear

D. External ear with middle ear

8. 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

9. 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

10. Saltatory conduction of nerve impulse takes place through

A. Myelinated fibre

B. Non-myelinated fibre

C. Grey fibres

D. None of these

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11. 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

12. The enzyme required for the conduction of nerve impulse across synapse is

A. choline acetylase

B. succinic dehydrogenase

C. peroxidase

D. ascorbic acid oxidase

13. 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

14. During stress condition which of the following nerves start working?

A. Sympathetic nerves

B. Parasympathetic nerves

C. Autonomic nerves

D. Cranial nerves

15. The gelatinous membrane covering the sensorys hair cells of the ear is known as

A. tectorial membrane

B. Reissner's membrane

C. basilar membrane

D. neuro-sensory membrane

16. Nerve cells do not divide because they do not have

A. centrosome

B. mitochondria

C. nucleus

D. Golgi body

17. The local depolarization of a receptor-cell membrane is called as

A. action potential.

B. resting potential

C. threshold potential

D. None of these

18. You are sitting in biology class daydreaming. Yourintrinsic heartbeat is controlled by

A. levels of adrenaline in the blood.

B. the medulla

C. the cerebrum

D. the spinal cord

19. 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 neurotransmitters required to inhibit an action potential

20. Arbor vitae is composed of

A. White matter

B. Neuroglea cells

C. Grey matter

D. All of these

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21. Which of the following cranial nerves can regulate heart beat?

A. X

B. IX

C. VIII

D. VII

22. Sensitive pigmented layer of eye is

A. cornea

B. retina

C. sclerotic

D. iris

23. Third ventricle of brain is also known as

A. metacoel

B. rhinocoel

C. paracoel

D. diacoel

24. One function of parasympathetic nervous system is

A. contraction of hair muscles

B. stimulation of sweat glands

C. acceleration of heartbeat

D. constriction of pupil

25. Ecdysis is the shedding of

A. stratum corneum

B. epidermis

C. dermis

D. stratum Malpighi