NEET Biology Neural Control and Coordination MCQs Set 12

Biology Objective Questions and Answers: Neural Control and Coordination

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Multiple Choice Questions

Question 1: Cytoplasm with typical cell organelles and Nissl’s granule is present in the
(a) Axon Hillock
(b) Cell body
(c) Axon
(d) Synaptic vesicles
Show Answer & Explanation

Answer: (b) Cell body

Explanation:
1. Cytoplasm with cell organelles and Nissl's granule is a characteristic of cyton/cell body part of axoplasm but absent in the axon.

Question 2: The Nissl’s granules are present in<br />a. Cell body<br />b. Axon<br />c. Dendrites<br />d. Glial cells
(a) a only
(b) a, b and c
(c) a and c
(d) a, b, c and d
Show Answer & Explanation

Answer: (c) a and c

Explanation:
1. Nissle's granules are found in the cyton as well as the dendrites but are absent in axon.

Question 3: Multipolar neurons are found in the
(a) Retina of eye
(b) Embryonic stage
(c) Both (1) & (2)
(d) Cerebral cortex
Show Answer & Explanation

Answer: (d) Cerebral cortex

Explanation:
1. Multipolar neurons–cerebral cortex Bipolar neurons - retina of eye Unipolar neurons – embryonic stage.

Question 4: In a resting neuron, the axonal membrane is
(a) Nearly impermeable to potassium ions (K+)
(b) Impermeable to positively charged proteins present in the axoplasm
(c) Comparatively more permeable to K+
(d) Completely permeable to sodium ions (Na+)
Show Answer & Explanation

Answer: (c) Comparatively more permeable to K+

Explanation:
1. At resting state, axonal membrane is more permeable to K+ ions due to opening of K+ leaky channels.

Question 5: The ionic gradients across the resting membrane are maintained by the
(a) Ion channels
(b) Sodium-potassium pumps
(c) Electrical synapses
(d) Chemical synapses
Show Answer & Explanation

Answer: (b) Sodium-potassium pumps

Explanation:
1. The ionic gradients across the resting membrane is due to opening of K+ leaky channels but is maintained because of Na+ K+ pump which continuously pump 3Na+ ions outwards in exchange of 2K+ inwards at the expense of energy.

Question 6: Action potential is also termed as
(a) Nerve impulse
(b) Reflex action
(c) Repolarisation
(d) Polarisation
Show Answer & Explanation

Answer: (a) Nerve impulse

Explanation:
1. The transmission of a nerve impulse called an action potential.

Question 7: On application of a stimulus on the axonal membrane,
(a) There is a rapid influx of K+ at that site
(b) There is a rapid efflux of Na+ at that site
(c) There is a rapid influx of Na+ at that site
(d) There is a rapid efflux of K+ at that site
Show Answer & Explanation

Answer: (c) There is a rapid influx of Na+ at that site

Explanation:
1. On application of a stimulus on the axonal membrane, there is rapid influx of Na+ ions from outside due to opening of Na+ voltage gated channels.

Question 8: A synapse is formed by
(a) Pre-synaptic membrane
(b) Post-synaptic membrane
(c) Synaptic cleft
(d) All of these
Show Answer & Explanation

Answer: (d) All of these

Explanation:
1. A synapse is comprised of (a) Pre–synaptic membrane (B) Synaptic cleft (C) Post-synaptic membrane.

Question 9: The receptors of neurotransmitters are present on/in the
(a) Pre-synaptic membrane
(b) Synaptic cleft
(c) Post-synaptic membrane
(d) Ion channels
Show Answer & Explanation

Answer: (c) Post-synaptic membrane

Explanation:
1. The neurotransmitters that are released by pre–synaptic membrane and attaches to the receptors that are present on the post-synaptic membrane.

Question 10: Which of the following is/are controlled by the human brain?<br />a. Balance of the body b. Circadian rhythm of the body<br />c. Human behaviour d. Functioning of heart and kidneys
(a) Only d
(b) a and d
(c) a, b and c
(d) a, b, c, d
Show Answer & Explanation

Answer: (d) a, b, c, d

Explanation:
1. Brain controls Balance of the body Circadian rhythm of the body Human behaviour Functioning of heart and kidneys.

Question 11: All of the following are parts of forebrain, except
(a) Cerebellum
(b) Corpus callosum
(c) Association areas
(d) Hypothalamus
Show Answer & Explanation

Answer: (a) Cerebellum

Explanation:
1. Cerebellum is the part of the hind brain, while corpus callosum, association areas and hypothalamus are part of forebrain.

Question 12: The association areas are not responsible for
(a) Intersensory associations
(b) Communication
(c) Regulation of sexual behaviour
(d) Memory
Show Answer & Explanation

Answer: (c) Regulation of sexual behaviour

Explanation:
1. Limbic system is responsible for the regulation of sexual behaviour.
2. Association areas regulate intersensory association, communication and memory.

Question 13: The limbic system is formed by
(a) The hypothalamus, epithalamus, amygdala and hippocampus
(b) Hypothalamus, amygdala and hippocampus
(c) Corpora quadrigemina and hippocampus
(d) Midbrain and hindbrain
Show Answer & Explanation

Answer: (b) Hypothalamus, amygdala and hippocampus

Explanation:
1. Limbic system is comprised of hypothalamus, amygdala and hippocampus.

Question 14: The part of human brain located between thalamus/ hypothalamus and pons is
(a) Forebrain
(b) Midbrain
(c) Hindbrain
(d) Vestibular apparatus
Show Answer & Explanation

Answer: (b) Midbrain

Explanation:
1. Midbrain is located between thalamus of forebrain and pons of hindbrain.

Question 15: In which of the following part of brain, the nerve impulses of sound are analysed?
(a) Visual cortex area
(b) Olfactory cortex area
(c) Auditory cortex area
(d) Tactile cortex area
Show Answer & Explanation

Answer: (c) Auditory cortex area

Explanation:
1. The auditory signals are analysed in the auditory cortex area present inside the temporal lobe. (Eye).

Question 16: Eye lens is held in the place by
(a) Muscle fibres of iris
(b) Ligaments attached to the ciliary body
(c) A transparent gel called vitreous humor
(d) Thin watery fluid called aqueous humor
Show Answer & Explanation

Answer: (b) Ligaments attached to the ciliary body

Explanation:
1. Eye lens are held in position by the suspensory ligaments which are attached to the ciliary body.

Question 17: The order of three layers of cells in the retina from inside to outside is
(a) Bipolar cells → Ganglion cells → Photoreceptor cells
(b) Photoreceptor cells → Ganglion cells → Bipolar cells
(c) Ganglion cells → Bipolar cells → Photoreceptor cells
(d) Photoreceptor cells → Bipolar cells → Ganglion cells
Show Answer & Explanation

Answer: (c) Ganglion cells → Bipolar cells → Photoreceptor cells

Explanation:
1. This option, Ganglion cells → Bipolar cells → Photoreceptor cells, is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 18: The visual acuity is the greatest at
(a) Fovea
(b) Blind spot
(c) Pupil
(d) Ciliary body
Show Answer & Explanation

Answer: (a) Fovea

Explanation:
1. This area is the thinned out portion of retina where only cones are densely packed.
2. As a result fovea is the point where the visual acuity (resolution) is greatest and vision is sharpest.

Question 19: Which of the following results in the generation of potential differences in the photoreceptor cells of eyes?
(a) Conversion of retinal into opsin
(b) Conversion of opsin into retinal
(c) Dissociation of the retinal from opsin
(d) Dissociation of the opsin from retinol
Show Answer & Explanation

Answer: (c) Dissociation of the retinal from opsin

Explanation:
1. Dissociation of retinal from opsin results in the generation of potential difference.
2. When light is absorbed by rhodopsin, retinal is split from protein and the rod becomes partially bleached.
3. At the same time nerve impulse is generated (Ear).

Question 20: The eustachian tube connects_____with the _____.
(a) External auditory canal, middle ear cavity
(b) Middle ear cavity, pharynx
(c) External auditory canal, labyrinth
(d) Cochlea, larynx
Show Answer & Explanation

Answer: (b) Middle ear cavity, pharynx

Explanation:
1. Eustachian tube connects middle ear to the pharynx.

Question 21: The membranous labyrinth is surrounded by a fluid called
(a) Perilymph
(b) Endolymph
(c) Cerebrospinal fluid
(d) Vitreous humor
Show Answer & Explanation

Answer: (a) Perilymph

Explanation:
1. Perilymph surrounds the membranous labyrinth.

Question 22: The lower membrane of the scala vestibuli is the
(a) Tympanic membrane
(b) Reissner’s membrane
(c) Basilar’s membrane
(d) Tectorial membrane
Show Answer & Explanation

Answer: (b) Reissner’s membrane

Explanation:
1. Tectorial membrane covers the tips of the hair cells.
2. Basilar's membrane is the lower membrane of cochlea.

Question 23: The scala vestibuli ends at the ______, while the scala tympani terminates at the ______. Find the correct option.
(a) Scala media, temporal bone
(b) Oval window, round window
(c) Pinna, tympanic membrane
(d) Eustachian tube, external auditory meatus
Show Answer & Explanation

Answer: (b) Oval window, round window

Explanation:
1. This option, Oval window, round window, is the correct choice, as it agrees with the standard NCERT account of this topic.

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Neural Control and Coordination Objective Questions & Solutions for NEET Biology

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