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NEET • BIOLOGY • NEURAL CONTROL AND COORDINATION
Neural control and coordination practice · Mixed difficulty
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91
Easy
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Remembering
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Which of the following are the properties of neural system?
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Correct option: D
Excitability and conductivity
Option D (Excitability and conductivity) is correct because these are the two fundamental properties of the neural system.
92
Easy
92 of 298
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The human neural system comprises
View answer and explanation
Correct option: C
Both (a) and (b)
Option C (Both (a) and (b)) is correct because the human neural system consists of both the Peripheral Nervous System (PNS) and the Central Nervous System (CNS).
93
Hard
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Glucose and oxygen are required by brain for constant supply of energy to control the functions of our body organs.
What will be the consequences if brain is deprived of oxygen and glucose?
I. Brain deprived of oxygen for just 5 minutes will get permanently damaged
II. Glucose is important in the nerve impulse conduction
III. One side of brain is unable to know, what the other side is doing, when it is deprived of oxygen
IV. Mental confusion will results if brain is deprived of glucose
What will be the consequences if brain is deprived of oxygen and glucose?
I. Brain deprived of oxygen for just 5 minutes will get permanently damaged
II. Glucose is important in the nerve impulse conduction
III. One side of brain is unable to know, what the other side is doing, when it is deprived of oxygen
IV. Mental confusion will results if brain is deprived of glucose
View answer and explanation
Correct option: C
I and IV
Option C (I and IV) is correct because oxygen deprivation for 5 minutes causes permanent brain damage, and glucose deprivation leads to mental confusion.
94
Hard
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Parkinsonism is related with
View answer and explanation
Correct option: A
brain
Option A (brain) is correct because Parkinsonism is a neurodegenerative disorder affecting the brain, specifically the basal ganglia.
95
Medium
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Analyzing
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Assertion : Nerve conduction is the one way
conduction.
Reason : Nerve impulse is transmitted from
dendrite terminals to axon terminals.
conduction.
Reason : Nerve impulse is transmitted from
dendrite terminals to axon terminals.
View answer and explanation
Correct option: C
If Assertion is true but Reason is false
Option C (Assertion is true but Reason is false) is correct because nerve conduction is indeed one-way, but the reason incorrectly states the direction of impulse transmission.
96
Easy
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Spinal cord is protected by
View answer and explanation
Correct option: D
Vertebral column
Option D is correct. The vertebral column, or backbone, provides bony protection for the spinal cord.
97
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How many of the given statements are correct?
A. Hypotahlamus is the centre for eating and drinking
B. Corpus callosum is made up of nerve fibres
C. ADH is synthesized by the posterior pituitary
D. Balancing by semicircular canals is doen by the macula.
A. Hypotahlamus is the centre for eating and drinking
B. Corpus callosum is made up of nerve fibres
C. ADH is synthesized by the posterior pituitary
D. Balancing by semicircular canals is doen by the macula.
View answer and explanation
Correct option: C
Three
Option B (Two) is correct because two of the given statements are accurate: A and B.
98
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Identify the basic functions of neural system
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Correct option: D
All of the above
Option D (All of the above) is correct because the neural system's basic functions include receiving sensory input, processing information, and responding to stimuli.
99
Medium
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Mark the following statements as true/false and choose the correct option from the codes given below
I. Neuroglial cells are the packing and supporting cells found in the brain and spinal cord
II. Oligodendrocytes is a category of glial cells that forms myelin sheaths around the axon
III. Microglia provides mechanical support to the neurons
IV. Astrocytes communicate with one another through potassium channels
Codes
I II III IV
I. Neuroglial cells are the packing and supporting cells found in the brain and spinal cord
II. Oligodendrocytes is a category of glial cells that forms myelin sheaths around the axon
III. Microglia provides mechanical support to the neurons
IV. Astrocytes communicate with one another through potassium channels
Codes
I II III IV
View answer and explanation
Correct option: A
True True False False
Option A (True True False False) is correct because neuroglial cells support neurons, oligodendrocytes form myelin sheaths, microglia provide immune defense, and astrocytes communicate through gap junctions, not just potassium channels.
100
Easy
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The reflex pathway comprises
View answer and explanation
Correct option: C
One afferent and one efferent neuron
Option C (One afferent and one efferent neuron) is correct because a basic reflex pathway requires an afferent neuron to carry sensory information and an efferent neuron to carry the motor response.
101
Medium
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There are two types of photoreceptor cells, i.e., …A… and …B… . These cells contains photopigments
Here, A and B refers to
Here, A and B refers to
View answer and explanation
Correct option: A
A-rods; B-cones
Option A (A-rods; B-cones) is correct because rods and cones are the two types of photoreceptor cells in the retina, and they contain photopigments.
102
Medium
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Understanding
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Choose the incorrect options regarding white matter of the brain
I. White matter of the brain is white in colour
II. White matter of the brain is white in colour but sometimes it is found to be grey
III. White matter of the brain is mostly formed by medullated nerve fibres
IV. White matter of the brain is formed of cell bodies of nerve fibres
I. White matter of the brain is white in colour
II. White matter of the brain is white in colour but sometimes it is found to be grey
III. White matter of the brain is mostly formed by medullated nerve fibres
IV. White matter of the brain is formed of cell bodies of nerve fibres
View answer and explanation
Correct option: B
II and IV
Option B (II and IV) is correct because white matter is white due to myelinated fibers, and it's composed of myelinated nerve fibers, not cell bodies.
103
Easy
103 of 298
Remembering
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Brain and spinal cord, combinely form the
View answer and explanation
Correct option: A
CNS
Option A is correct. The brain and spinal cord together constitute the Central Nervous System (CNS).
104
Hard
104 of 298
Understanding
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Read the following statements w.r.t. Knee-jerk reflex and choose the correct answer.
(A) Interneuron initiates impulse in one or more motor or efferent neurons.
(B) Reflex pathway comprises of at least one afferent neuron and one efferent neuron
(A) Interneuron initiates impulse in one or more motor or efferent neurons.
(B) Reflex pathway comprises of at least one afferent neuron and one efferent neuron
View answer and explanation
Correct option: D
Only statement B is correct
The correct answer is D (Only statement B is correct) because interneurons are not always involved in initiating impulses in motor neurons in the knee-jerk reflex, which is a monosynaptic reflex.
105
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Assertion : Cerebral cortex appears white.
Reason : It is because of the myelin sheath
covering of the tracts.
Reason : It is because of the myelin sheath
covering of the tracts.
View answer and explanation
Correct option: D
If both Assertion and Reason are false
Option D (If both Assertion and Reason are false) is correct because the cerebral cortex appears grey, not white, and this is due to the presence of neuron cell bodies, not myelin sheaths.
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106
Hard
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Remembering
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Schneiderian and tympanic membranes respectively belongs to
View answer and explanation
Correct option: D
Nose and ear
Option D (Nose and ear) is correct because the Schneiderian membrane is associated with the nasal cavity, and the tympanic membrane is the eardrum in the ear.
107
Hard
107 of 298
Remembering
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The human hind brain comprises three parts, one of tissue cells which is
View answer and explanation
Correct option: C
Cerebellum
Option C (Cerebellum) is correct because the cerebellum is a major part of the hindbrain, responsible for motor control and coordination.
108
Hard
108 of 298
Understanding
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Choose the odd one w.r.t. neurotransmitters
View answer and explanation
Correct option: D
Cortisone
Option D (Cortisone) is correct because cortisone is a steroid hormone, while acetylcholine, epinephrine, and norepinephrine are neurotransmitters.
109
Hard
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Remembering
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The cranial meninges from outer to inner region of the brain are:
View answer and explanation
Correct option: A
Duramater, arachnoid, piamater
Option A (Duramater, arachnoid, piamater) is correct because this is the correct order of the meninges from outer to inner.
110
Medium
110 of 298
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Intercellular communication in multicellular organism occurs through
View answer and explanation
Correct option: D
Both nervous and endocrine system
Option D (Both nervous and endocrine system) is correct because multicellular organisms use both nervous and endocrine systems for intercellular communication.
111
Medium
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Iodopsin photopigments are present in A which are associated with B vision. Choose the option that correctly fills the blank a and b.
View answer and explanation
Correct option: C
Cones, Colour
Option C (Cones, Colour) is correct because iodopsin is the photopigment found in cones, which are responsible for color vision.
112
Medium
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Which of the following statements are correct about the midbrain? I. Located between the thalamus/hypothalamusand pons of hind brain II. Has a canal named cerebral aqueduct passes through III. Dorsal part consists of 4 lobes Choose the correct option
View answer and explanation
Correct option: D
I, II and III
Option D (I, II and III) is correct because all three statements accurately describe the midbrain's location, structure, and dorsal features.
113
Easy
113 of 298
Remembering
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The pressure on either sides of the ear drum gets equalized by
View answer and explanation
Correct option: B
Eustachian tube
Option B (Eustachian tube) is correct because the Eustachian tube equalizes pressure on either side of the eardrum.
114
Medium
114 of 298
Remembering
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Action of lysozyme is
View answer and explanation
Correct option: A
Physiological
Option A (Physiological) is correct because lysozyme's action, which involves breaking down bacterial cell walls, is a biochemical and functional process, hence physiological.
115
Easy
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Understanding
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Assertion: Impulse transmission across an electrical synapse is always faster than that across a chemical
synapse.
Reason: At electrical synapses, the membranes of pre- and post-synaptic neurons are in very close
proximity
synapse.
Reason: At electrical synapses, the membranes of pre- and post-synaptic neurons are in very close
proximity
View answer and explanation
Correct option: A
If both the assertion and the reason are true and the reason is a correct explanation of the assertion
Option A (If both the assertion and the reason are true and the reason is a correct explanation of the assertion) is correct because electrical synapses are faster due to direct ion flow through gap junctions, placing pre- and post-synaptic membranes in close proximity.
116
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The nerve fibre in its resting stage is
View answer and explanation
Correct option: A
More permeable to
Option A (More permeable to ) is correct because in the resting stage, the nerve fiber membrane is more permeable to potassium ions.
117
Medium
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Olfactory lobes of man are
View answer and explanation
Correct option: D
Solid
Option B (Fused and solid) is correct because in humans, the olfactory lobes are reduced in size and are solid structures.
118
Easy
118 of 298
Understanding
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A person is wearing spectacles with concave lenses for correcting vision. While not using the glasses, the image of a distant object in his case will be formed?
View answer and explanation
Correct option: C
In front of retina
Option C (In front of retina) is correct because concave lenses are used to correct myopia (nearsightedness), meaning without the glasses, the image focuses in front of the retina.
119
Medium
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The highly specialized cells called neurons can
View answer and explanation
Correct option: D
All of the above
Option D (All of the above) is correct because neurons are specialized cells that detect, receive, and transmit stimuli.
120
Medium
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Bipolar neurons occur in
View answer and explanation
Correct option: B
Retina of eye
Option B (Retina of eye) is correct because bipolar neurons are specialized sensory neurons found in the retina, responsible for transmitting signals from photoreceptors to ganglion cells.
Revision notes and key takeaways
Review NEURAL CONTROL AND COORDINATION in your textbook or class notes, then use this set to check your understanding.
Showing 91-120 of 298 questions