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NEET • BIOLOGY • NEURAL CONTROL AND COORDINATION

Neural control and coordination practice · Medium

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Showing 31-60 of 127 questions

31 Medium

31 of 127

Understanding +4 | -1

Choose the incorrect statement

View answer and explanation

Correct option: D

Hypothalamus is responsible for complex functions like intersensory associations, memory and communication

Option D (Hypothalamus is responsible for complex functions like intersensory associations, memory and communication) is correct because the cerebrum, not the hypothalamus, is primarily responsible for intersensory associations, memory, and communication.

32 Medium

32 of 127

Understanding +4 | -1

Injury to vagus nerve in human is not likely to affect

View answer and explanation

Correct option: A

Tongue movements

Option A (Tongue movements) is correct because tongue movements are primarily controlled by the hypoglossal nerve (CN XII), not the vagus nerve (CN X).

33 Medium

33 of 127

Understanding +4 | -1

In the axon of motor nerve fibre, the nerve impulse travels

View answer and explanation

Correct option: B

Away from cell body

Option B (Away from cell body) is correct because nerve impulses travel down the axon, which extends away from the cell body.

34 Medium

34 of 127

Remembering +4 | -1

Reflex action involves

View answer and explanation

Correct option: A

Spinal cord

Option A (Spinal cord) is correct because the spinal cord is the primary control center for many reflex actions, allowing for quick responses without involving the brain.

35 Medium

35 of 127

Understanding +4 | -1

Mechanism of neural coordination involves

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Correct option: D

All of the above

Option D (All of the above) is correct because neural coordination involves nerve impulse transmission, synaptic conduction, and reflex actions.

36 Medium

36 of 127

Understanding +4 | -1

Which of the following statements is correct about the nodes of ranvier?

View answer and explanation

Correct option: B

Myelin sheath is discontinuous

Option B (Myelin sheath is discontinuous) is correct because the nodes of Ranvier are gaps in the myelin sheath along the axon.

37 Medium

37 of 127

Understanding +4 | -1

Under prolonged starvation, brain receives energy from

View answer and explanation

Correct option: D

Acetoacetate

Option D (Acetoacetate) is correct because during prolonged starvation, the brain adapts to use ketone bodies like acetoacetate as an alternative energy source.

38 Medium

38 of 127

Remembering +4 | -1

Choose the correct non-protein amino acid from the given option.

View answer and explanation

Correct option: D

γ-amino butyric acid

Option D is correct. γ-amino butyric acid (GABA) is a non-protein amino acid that functions as a neurotransmitter.

39 Medium

39 of 127

Understanding +4 | -1

Read the given statements :
Statement A : Organ of corti rests on tectorial membrane
Statement B : organ of corti helps to maintain equilibrium of the body
Choose the incorrect option

View answer and explanation

Correct option: B

Both statements A and B are incorrect

Option B (Both statements A and B are incorrect) is correct because the Organ of Corti rests on the basilar membrane, not the tectorial membrane, and it is responsible for hearing, not equilibrium.

40 Medium

40 of 127

Analyzing +4 | -1

Assertion : Nerve conduction is the one way
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.

41 Medium

41 of 127

Analyzing +4 | -1

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.

View answer and explanation

Correct option: C

Three

Option B (Two) is correct because two of the given statements are accurate: A and B.

42 Medium

42 of 127

Understanding +4 | -1

Identify the basic functions of neural system

View answer and explanation

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.

43 Medium

43 of 127

Understanding +4 | -1

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

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.

44 Medium

44 of 127

Remembering +4 | -1

There are two types of photoreceptor cells, i.e., …A… and …B… . These cells contains photopigments
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.

45 Medium

45 of 127

Understanding +4 | -1

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

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.

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46 Medium

46 of 127

Analyzing +4 | -1

Assertion : Cerebral cortex appears white.

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.

47 Medium

47 of 127

Understanding +4 | -1

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.

48 Medium

48 of 127

Remembering +4 | -1

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.

49 Medium

49 of 127

Understanding +4 | -1

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.

50 Medium

50 of 127

Remembering +4 | -1

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.

51 Medium

51 of 127

Remembering +4 | -1

The nerve fibre in its resting stage is

View answer and explanation

Correct option: A

More permeable to

{K^ + }

Option A (More permeable to

{K^ + }

) is correct because in the resting stage, the nerve fiber membrane is more permeable to potassium ions.

52 Medium

52 of 127

Remembering +4 | -1

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.

53 Medium

53 of 127

Remembering +4 | -1

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.

54 Medium

54 of 127

Remembering +4 | -1

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.

55 Medium

55 of 127

Understanding +4 | -1

Which helps the equalizing the pressure on either side of the ear drum

View answer and explanation

Correct option: C

eustachian tube

Option C (eustachian tube) is correct because the Eustachian tube connects the middle ear to the nasopharynx, allowing for pressure equalization on both sides of the tympanic membrane.

56 Medium

56 of 127

Understanding +4 | -1

Which of the following is not related to the autonomic nervous system?

View answer and explanation

Correct option: D

Memory and learning

Option D (Memory and learning) is correct because memory and learning are primarily functions of the central nervous system, particularly the cerebrum and hippocampus, not the autonomic nervous system.

57 Medium

57 of 127

Remembering +4 | -1

Vestibular apparatus contains

View answer and explanation

Correct option: B

Semicircular canals and otolith organ

Option B (Semicircular canals and otolith organ) is correct because the vestibular apparatus, responsible for balance, comprises the semicircular canals and the otolith organs (utricle and saccule).

58 Medium

58 of 127

Understanding +4 | -1

Which of the following statements are true w.r.t. association areas of brain? (A) These areas are responsible for complex functions like intersensory associations, memory and communication
(B) There are large regions present in cerebral cortex
(C) It is consistuted of white matter
(D) These are related with motor signalling only

View answer and explanation

Correct option: A

A and B only

Option A (A and B only) is correct because association areas are responsible for complex functions like intersensory associations, memory, and communication, and there are large regions present in the cerebral cortex.

59 Medium

59 of 127

Remembering +4 | -1

Ampulla of Lorenzini are thermoreceptors which are found in

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Correct option: A

Fishes

Option A (Fishes) is correct because Ampullae of Lorenzini are electroreceptors and thermoreceptors found in cartilaginous fishes like sharks and rays.

60 Medium

60 of 127

Understanding +4 | -1

N{a^ + }

{K^ + }

pump is found in membranes of many cells, like nerve cells. It works against electrochemical gradient and involve of ATP used

View answer and explanation

Correct option: A

3 ions of

N{a^ + }

are pumped out and

2{k^ + }

are taken in

Option A (3 ions of

N{a^ + }

are pumped out and

2{k^ + }

are taken in) is correct because the sodium-potassium pump actively transports 3 sodium ions out of the cell and 2 potassium ions into the cell, using ATP.

Revision notes and key takeaways

Review NEURAL CONTROL AND COORDINATION in your textbook or class notes, then use this set to check your understanding.

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