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NEET • BIOLOGY • NEURAL CONTROL AND COORDINATION

Neural control and coordination practice · Easy

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61 Easy

61 of 96

Understanding +4 | -1

Select the incorrect statement w.r.t. function of neurons

View answer and explanation

Correct option: D

Produce different kinds of stimuli

Option D (Produce different kinds of stimuli) is correct because neurons receive and transmit stimuli, but they do not produce different kinds of stimuli themselves.

62 Easy

62 of 96

Analyzing +4 | -1

Select the odd one w.r.t brain stem.

View answer and explanation

Correct option: B

Cerebellum

Option B (Cerebellum) is correct because the cerebellum is not part of the brain stem, while the pons, medulla oblongata, and midbrain are.

63 Easy

63 of 96

Remembering +4 | -1

Myelin sheath is derived from

View answer and explanation

Correct option: B

Schwann cells

Option B (Schwann cells) is correct because Schwann cells are responsible for forming the myelin sheath around axons in the peripheral nervous system.

64 Easy

64 of 96

Understanding +4 | -1

Somatic neural system relays impulse from

View answer and explanation

Correct option: D

CNS to skeletal muscles

Option D (CNS to skeletal muscles) is correct because the somatic neural system controls voluntary movements by relaying impulses from the CNS to skeletal muscles.

65 Easy

65 of 96

Remembering +4 | -1

Which one is correct regarding the ear and hearing?

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Correct option: A

The range of human hearing is from 20 Hz to 20 kHz

Option A (The range of human hearing is from 20 Hz to 20 kHz) is correct as it accurately represents the typical range of frequencies humans can perceive.

66 Easy

66 of 96

Remembering +4 | -1

Vertebrate brain differentiates from

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Correct option: C

Ectoderm

Option C (Ectoderm) is correct because the vertebrate brain develops from the ectoderm during embryonic development.

67 Easy

67 of 96

Remembering +4 | -1

The system, responsible for providing an organized network of point to point connections for a quick coordination, is called

View answer and explanation

Correct option: D

Neural system

Option D (Neural system) is correct because the neural system provides a rapid, organized network for point-to-point connections and quick coordination.

68 Easy

68 of 96

Understanding +4 | -1

All of the following structures of internal ear are responsible for maintenance of balance of the body and posture except

View answer and explanation

Correct option: D

Organ of Corti

Option D (Organ of Corti) is correct because the Organ of Corti is responsible for hearing, while the other options are involved in balance.

69 Easy

69 of 96

Understanding +4 | -1

What is incorrect about the resting state of neuron?

View answer and explanation

Correct option: D

Outer surface of axon is negatively charged

Option D (Outer surface of axon is negatively charged) is correct because, in the resting state, the outer surface of the axon is positively charged relative to the inside.

70 Easy

70 of 96

Understanding +4 | -1

Which is characteristic of the sympathetic
division of the autonomic system?

View answer and explanation

Correct option: B

Dilates the bronchi

Option B (Dilates the bronchi) is correct because sympathetic nervous system activation leads to bronchodilation to increase oxygen intake.

71 Easy

71 of 96

Remembering +4 | -1

Eustachian tube connects

View answer and explanation

Correct option: A

Middle ear with nasopharynx

Option A (Middle ear with nasopharynx) is correct because the Eustachian tube connects the middle ear to the nasopharynx, allowing for pressure equalization.

72 Easy

72 of 96

Remembering +4 | -1

Synaptic knob possesses

View answer and explanation

Correct option: C

Synaptic vesicles

Option C (Synaptic vesicles) is correct because synaptic knobs contain synaptic vesicles, which store neurotransmitters for signal transmission.

73 Easy

73 of 96

Analyzing +4 | -1

Select the incorrect pair.

View answer and explanation

Correct option: B

Association area – Contains a number of centres which control body temperature, urge for drinking

Option B (Association area – Contains a number of centres which control body temperature, urge for drinking) is correct because the hypothalamus, not the association area, controls body temperature and the urge for drinking.

74 Easy

74 of 96

Remembering +4 | -1

On the basis of nature of nerve fibres, the nerves are

View answer and explanation

Correct option: C

Sensory, motor and mixed nerves

Option C is correct. Nerves can be classified based on the type of information they carry as sensory, motor, or mixed.

75 Easy

75 of 96

Remembering +4 | -1

Afferent nerve fibres carry impulses from

View answer and explanation

Correct option: B

Receptors to central nervous system

Option B (Receptors to central nervous system) is correct because afferent neurons carry sensory information from receptors to the CNS.

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76 Easy

76 of 96

Understanding +4 | -1

Assertion: We can equalise pressure on either side of ear drum
Reason: Eustachian tube connects inner ear with pharynx

View answer and explanation

Correct option: C

If the assertion is true but the reason is false

Option C (If the assertion is true but the reason is false) is correct because while we can equalize pressure, the Eustachian tube connects the middle ear, not the inner ear, to the pharynx.

77 Easy

77 of 96

Understanding +4 | -1

Assertion: The place in retina from which the optic nerve leaves is known as blind spot
Reason: Because this place is devoid of photoreceptor cells

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 the blind spot lacks photoreceptor cells, which is why it's the point where the optic nerve exits and no image can be formed.

78 Easy

78 of 96

Understanding +4 | -1

Read the following statements regarding regulation of cardiac activity.

A. A special neural centre in medulla can moderate cardiac output through somatic neural system.

B. Neural signals through parasympathetic nervous system can decrease the rate of heartbeat.

C. Neural signals through sympathetic nervous system can increase the rate of heartbeat.

D. Adrenal medullary hormones can also decrease the cardiac output.

Choose the option that correctly states the above statements as true (T) or false (F).

View answer and explanation

Correct option: B

A-F, B-T, C-T, D-F

Option B (A-F, B-T, C-T, D-F) is correct because the medulla moderates cardiac output through the autonomic nervous system, and adrenal medullary hormones increase, not decrease, cardiac output.

79 Easy

79 of 96

Remembering +4 | -1

Which pair of Structures distinguish a nerve cell from other cells?

View answer and explanation

Correct option: C

Perlkaryon and dendrites

Option C (Perlkaryon and dendrites) is correct because these structures are unique to nerve cells and distinguish them from other cell types.

80 Easy

80 of 96

Remembering +4 | -1

Vitreous chamber, which is filled by vitreous humor is the space

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Correct option: A

Behind the lens

Option A (Behind the lens) is correct because the vitreous chamber is located behind the lens and is filled with vitreous humor.

81 Easy

81 of 96

Understanding +4 | -1

Which of the following statemetns are true regarding the hypothalamus?

View answer and explanation

Correct option: C

It has centres which control body temperature, urge for eating and drinking

Option C (It has centres which control body temperature, urge for eating and drinking) is correct because the hypothalamus regulates these essential functions.

82 Easy

82 of 96

Understanding +4 | -1

Given below the hormones present in human body
I. Cortisone
II. Acetylcholine
III. Epinephrine
Choose the correct option regarding these hormones

View answer and explanation

Correct option: C

II and III are neurotransmitter

Option C (II and III are neurotransmitter) is correct because Acetylcholine and Epinephrine are well-known neurotransmitters, while Cortisone is a steroid hormone.

83 Easy

83 of 96

Understanding +4 | -1

The movement of the nerve impulse across synaptic cleft is primarily

View answer and explanation

Correct option: A

A chemical event

The correct answer is A (A chemical event) because neurotransmitters are released to transmit the nerve impulse across the synaptic cleft.

84 Easy

84 of 96

Remembering +4 | -1

Eustachian tube is a passage which connects the

View answer and explanation

Correct option: A

Middle ear with the pharynx

Option A is correct because the Eustachian tube connects the middle ear to the pharynx, allowing for pressure equalization.

85 Easy

85 of 96

Analyzing +4 | -1

All of the following characteristics of electron and chemical synapses correctly differentiate these synapses except

View answer and explanation

Correct option: C

Electrical synapse - Impulse transmission across synapse is always slower; Chemical synapse - Impulse transmission across synapse is always faster

Option C (Electrical synapse - Impulse transmission across synapse is always slower; Chemical synapse - Impulse transmission across synapse is always faster) is correct because electrical synapses are actually faster than chemical synapses.

86 Easy

86 of 96

Remembering +4 | -1

Identify the correct option in the relevance of arrangement of cranial meninges from inside (which is in contact with the brain tissue) to outside (cranium):

View answer and explanation

Correct option: D

Pia\mathrm{ }mater \to \;Arachnoid\; \to Dura\mathrm{ }mater

Option D is correct. The correct order of cranial meninges from inside to outside is Pia mater, Arachnoid, and Dura mater.

87 Easy

87 of 96

Understanding +4 | -1

A reflex arc does not involve 

View answer and explanation

Correct option: C

Brain

The correct answer is C (Brain) because a reflex arc is a direct pathway from sensory neuron to motor neuron (or interneuron) bypassing the brain for a quick response.

88 Easy

88 of 96

Understanding +4 | -1

Which of the following act is responsible for the depolarisation of the neuron?

View answer and explanation

Correct option: B

Opening of voltage gated

\mathrm{Na}^{+}

channel

Option B (Opening of voltage gated

\mathrm{Na}^{+}

channel) is correct because the influx of sodium ions through voltage-gated sodium channels causes depolarization of the neuron.

89 Easy

89 of 96

Remembering +4 | -1

Retina of eye is analogous to which part of camera?

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Correct option: D

Film

Option D (Film) is correct because the retina in the eye functions similarly to the film in a camera, capturing the image.

90 Easy

90 of 96

Remembering +4 | -1

The adult human eyeball is nearly a ….. Structure

View answer and explanation

Correct option: D

Spherical

Option D (Spherical) is correct because the adult human eyeball is approximately spherical in shape.

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Neural control and coordination practice · Easy

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