Below are MCQs according to PMC biology syllabus on Biology unit coordination and Control. Answer key is given at the end.
(Coordination and control/ Nervous)
Q.1 Nervous coordination involves specialized cells or neurons linked together directly or via the central nervous system, to form network that connects the:
A) Receptor and neurons
B) Receptors and effectors
C) Receptors and CNS
D) CNS and effectors
Q.2 The neurons has capacity to generate and conduct impulses which travel across the:
A) Synapse and pass from the receptors to effectors
B) Effectors and pass from the synapse to receptors
C) Synapse and pass from the effectors to receptor
D) Receptors and pass from the synapse to effectors
Q.3 The elements of nervous system which help in coordination are:
A) Receptors, neurons and effectors
B) CNS and PNS
C) Motor, sensory and associative neurons
D) Brian and spinal cord
Q.4 The receptors for smell, taste and blood composition are:
A) Mechanoreceptors C) Nociceptors
B) Chemoreceptors D) Thermoreceptor
Q.5 The example of chemoreceptors is:
A) Eyes C) Stray ending
B) Nose D) Rods and cones
Q.6 All are the examples of mechanoreceptors , EXCEPT:
A) Free nerve endings
B) Stray endings
C) Expanded tip endings
D) Rods and cones
Q.7 It is an example of mechanoreceptors:
A) Hypothalamus
B) Expanded tip endings
C) Tongue
D) Rods and cones
Q.8 These respond to stimuli of light:
A) Mechanoreceptors
B) Chemoreceptors
C) Photoreceptors
D) Undifferentiated ending
Q.9 The receptors that receive stimuli of light are:
A) Free nerve ending
B) Rods and cones
C) Expanded tip endings
D) Stray nerve ending
Q.10 All of the principal types of sensations that we can experience are called:
A) Visceral sensations
B) Sensation of pain
C) Modalities of sensation
D) Sensation of body position
Q.11 Despite the fact that we experience different modalities of sensation, nerve fibres transmit only:
A) Responses C) Stimuli
B) Impulses D) Few
Q.12 The ________ is determined by the point in the CNS to which the nerve fibre leads:
A) Type of sensation
B) Strength of sensation
C) Intensity of sensation
D) Frequency of sensation
Q.13 Touch stimulus is carried by nerve impulse in the:
A) Visual cortex of brain
B) Auditory centre of brain
C) Taste centre of brain
D) Touch area of brain
Q.14 Each receptor organ is specialized to
receive a particular type of stimulus and
this is carried to the:
A) Particular area of the PNS
B) Particular area of the muscles
C) Particular area of the glands
D) Particular area of the brain
Q.15 In skin the receptors are concerned with at least how many different senses:
A) Two C) Four
B) Three D) Five
Q.16 Receptors found in the skin are associated with:
A) Touch, pressure, hearing, cold & pain
B) Touch, pressure, heat, cold & pain
C) Touch, pressure, heat, cold & visual
D) Touch, taste, heat, cold & pain
Q.17 The detection of vibration of the ground by terrestrial vertebrates is probably achieved by receptors in the:
A) Joints C) Ears
B) Eyes D) Base of hairs
Q.18 The relative abundance of various types of receptors:
A) Remains same C) Differs greatly
B) Differ rarely D) Remains uniform
Q.19 Cold receptors are nearly _______ less bundant than pain receptors:
A) 27 percent C) 27 times
B) 10 percent D) 10 times
Q.20 _________ receptors are nearly 27 times more abundant than cold receptors:
A) Temperature C) Pain
B) Heat D) Touch
Q.21 ________ receptors are nearly 27 times less abundant than pain receptors:
A) Touch C) Temperature
B) Heat D) Cold
Q.22 The receptors are ________ over the entire surface of the body.
A) Distributed evenly
B) Not distributed evenly
C) Not distributed unevenly
D) Not distributed
Q.23 ________ receptors are much more numerous in the finger tips than in the skin of the back:
A) Touch C) Cold
B) Pain D) Heat
Q.24 The unequal distribution of touch receptor in finger tips as compared to the backside skin indicates the:
A) Normal functions of those two parts of the body
B) Location of those parts of the body
C) Surface area of these parts of the body
D) Size of those parts of the body
Q.25 The stimulus received by the receptors in the skin which are the endings of sensory neurons is passed to the_________ via inter neurons:
A) Interneurons C) Motor neurons
B) Relay neurons D) Somatic neurons
Q.26 Example of mechanoreceptors is/are:
A) Eyes C) Rods and cones
B) Stretch receptors D) Hypothalamus
Q.27 The stimulus received by the receptors in the skin is passed to the motor neurons via associative neurons which are present in the:
A) Brain C) Brain and spinal
B) Spinal cord D) Fingertips
Q.28 Impulse is sent by the motor neurons to the:
A) Receptors C) Muscles
B) Effectors D) Glands
Q.29 The sensations of ________ are detected by modified sensory neurons having naked nerve endings:
A) Heat and cold C) Touch and pain
B) Pain and cold D) Pain and heat
Q.30 The sensations of ________ are detected by modified sensory neurons:
A) Touch, pressure, heat, cold and pain
B) Hearing, taste, body position and smell
C) Touch, pressure, hearing, taste and pain
D) Pressure, pain, taste, touch and smell
Q.31 Specialized cellular corpuscles detect the sensation of:
A) Pressure, touch and pain
B) Pressure, vision and hearing
C) Pressure, heat and cold
D) Pressure, taste and touch
Q.32 The chief structural and functional units of nervous system are:
A) Cell bodies
B) Neurons
C) Axons
D) Receptors & Effectors
Q.33 ________ play a vital role in the nutrition of neurons and their protection by myelin sheath:
A) Soma C) Neuroglia
B) Cell body D) Dendrites
Q.34 There are ________ functional types of neurons:
A) Two C) Four
B) Three D) Five
Q.35 The _______ of certain brain cells branch profusely, giving cell a tree like appearance:
A) Axons C) Dendrites
B) Cell bodies D) Soma
Q.36 Many granules are present in the _____of neuron:
A) Axon ending
B) Axons
C) Dendrites
D) Cell bodies or soma
Q.37 Many sensory neurons have only one fiber, which branch:
A) A long distance from the cell body
B) A short distance from the cell body
C) A long distance from the CNS
D) A short distance from the PNS
Q.38 The neuron has ________ arising from its cell body:
A) Dendrites
B) Axons
C) Dendron
D) Protoplasmic processes
Q.39 There are _______ main types of cytoplasmic processes or fibres in neurons:
A) Two C) Four
B) Three D) Five
Q.40 It may be more than a meter long in some neurons:
A) Axon ending C) Dendrite
B) Axon D) Dendron
Q.41 Nissl’s granules which are groups of ribosomes associated with endoplasmic reticulum and Golgi apparatus are present in the:
A) Dendrites C) Cell body
B) Axon D) Axoplasm
Q.42 Microtubules, neurofibrils, rough endoplasmic reticulum and mitochondria are present throughout the _______ of the neuron:
A) Axon
B) Dendron
C) Cytoplasm of axon
D) Dendrites
Q.43 The _______ is the main nutritional part of the nerve cell and is concerned with the biosynthesis of materials necessary for the growth and maintenance of the neuron:
A) Cell body or soma C) Dendron
B) Dendrites D) Axon
Q.44 If the _________ of the neuron remains intact, it can regenerate axonal and dendrite fibres, but neuron once mature, do not divide any further:
A) Axon C) Cell body
B) Dendron D) Dendrites
Q.45 The structures which respond to the impulse coming via motor neurons are:
A) Receptors
B) Effectors
C) Sense organs
D) Pacinian corpuscles
Q.46 The nervous pathways utilized for an immediate and involuntary action performed by our body is called:
A) Spinal cord C) Reflex arc
B) Brain D) CNS
Q.47 Flow of impulse through the nervous system involving ________ will be clear if we study an example of reflex arc:
A) Receptors, neurons & effectors
B) Forebrain, Mid brain & Hind Brain
C) Sensory, motor and associative neurons
D) Brain, Spinal cord & PNS
Q.48 Reflex arc is the pathway of passage of impulse during a:
A) Voluntary action
B) Nervous action
C) Unconscious action
D) Reflex action
Q.49 The simple reflex circuit includes of thefour elements of a neural pathway in following sequence:
A) Sensory neuron, associative neuron, motor neuron and muscles
B) Sensory neuron, motor neuron, associative neuron and glands
C) Sensory neuron, motor neuron, associative neuron and muscles
D) Associative neurons, sensory neurons, motor neurons and muscles
Q.50 The sensory neurons have pain sensitive endings in the:
A) Joints C) Skin
B) Ears D) Nose
Q.51 The sensory neurons have pain sensitive ending in the skin and _______ leading to the spinal cord:
A) Short fibre C) Thick fibre
B) Long fibre D) Thin fibre
Q.52 The sensory neurons also make a synapse on associative neurons not involved in the reflex, that carry signals to the brain:
A) Informing it of the danger
B) Informing it of the situation
C) Informing it of the tranquil position
D) Informing it of the confusion
Q.53 Nerve impulse is a wave of electrochemical change, which travels along the length of the neuron involving _________ across the cell:
A) Chemical reactions and movement of elements
B) Chemical reactions and movement of molecules
C) Physical actions and movement of ions
D) Chemical reactions and movement of ions
Q.54 Human nervous system is a type of:
A) Diffused nervous system
B) Centralized nervous system
C) Primitive nervous system
D) Peripheral nervous system
Q.55 It conducts signals to and from the brain and controls reflex activities:
A) Brain C) CNS
B) Spinal cord D) PNS
Q.56 It carries signals from the CNS that control the activities of muscles and glands:
A) Sensory neurons
B) Brain
C) Associative neurons
D) Motor neurons
Q.57 It controls involuntary responses by influencing organs, glands and smooth muscles:
A) Somatic nervous system
B) Central nervous system
C) Autonomic nervous system
D) Peripheral nervous system
Q.58 The CNS consists of brain and spinal
cord, which are both protected in:
A) Two ways C) Four ways
B) Three ways D) Five ways
Q.59 _______ which is a part of skull, protects the brain:
A) Meninges
B) CSF
C) Cranium
D) Vertebral columns
Q.60 The brain and spinal cord are also protected by ______ layers of meninges:
A) Single C) Triple
B) Double D) Tetra
Q.61 _________ baths the neurons of brain and spinal cord and cushions against the bumps and jolts:
A) Meninges
B) Saliva
C) Cerebrospinal fluid
D) Amniotic fluid
Q.62 The spinal cord has:
A) Many cavities C) Central canal
B) Many ventricles D) Many canals
Q.63 Thalamus, limbic system and cerebrum are three functional parts of:
A) Fore brain C) Hind brain
B) Mid brain D) Limbic system
Q.64 The information that includes sensory input from auditory and visual pathways, from the skin and from within the body is carried by _______ to limbic system and cerebrum:
A) Thalamus C) Cerebrum
B) Hypothalamus D) Limbic system
Q.65 ________ works together to produce our most basic and primitive emotions, drives and behaviors:
A) Cerebrum C) Corpus callosum
B) Thalamus D) Limbic system
Q.66 Fear, rage, tranquility, hunger, thirst, pleasure and sexual responses are the most ________ emotions:
A) Basic and primitive
B) Exceptional
C) Developed and advanced
D) Extraordinary
Q.67 Limbic system consists of:
A) Hypothalamus, amygdala & hippocampus
B) Thalamus, Hypothalamus & Amygdala
C) Hypothalamus, Pons & Hippocampus
D) Amygdala, Hippocampus & thalamus
Q.68 It acts as a major coordinating center controlling body temperature, hunger, the menstrual cycle, water balance, the sleep wake cycle etc.:
A) Hypothalamus C) Thalamus
B) Hippocampus D) Amygdala
Q.69 It plays an important role in formation of long term memories:
A) Hippocampus C) Hypothalamus
B) Amygdala D) Cerebrum
Q.70 It is the largest part of the brain:
A) Cerebellum C) Cerebrum
B) Amygdala D) Thalamus
Q.71 Cerebrum consists of _____ of neurons:
A) Ten billion C) Tens of billions
B) Ten million D) Tens of millions
Q.72 It directs the voluntary movements:
A) Cerebral cortex
B) Cerebral medulla
C) Cerebral hemispheres
D) Cerebellum
Q.73 It contains primary sensory areas:
A) Cerebral medulla
B) Cerebral hemispheres
C) Corpus callosum
D) Cerebral cortex
Q.74 This area is involved in speech and also receives and interprets sensation of touch from all parts of the body:
A) Cerebral hemispheres
B) Cerebral cortex
C) Corpus callosum
D) Cerebral medulla
Q.75 The left cerebral hemisphere controls the:
A) Right side of the body
B) Upper side of the body
C) Left side of the body
D) Lower side of the body
Q.76 It is very important in screening the input information, before they reach higher brain center:
A) Corpus callosum
B) Mid brain
C) Reticular formation
D) Cerebrum
Q.77 Certain neurons in _______ located above the medulla, appear to influence transition between sleep and wakefulness, and the rate and pattern of breathing:
A) Medulla oblongata C) Pons
B) Cerebellum D) Mid brain
Q.78 It is also involved in learning and memory storage for behaviors:
A) Pons C) Limbic system
B) Cerebellum D) Hippocampus
Q.79 Medulla oblongata narrows down into an oval shaped hollow cylinder called:
A) Cerebellum C) Spinal cord
B) Pons D) Vertebral column
Q.80 It runs through the vertebral column:
A) Spinal cord
B) Meninges
C) Cerebrospinal fluid
D) CSF
Q.81 An inner butterfly shaped grey matter is found in:
A) Cerebrum
B) Cerebellum
C) Spinal cord
D) Medulla oblongata
Q.82 White matter of spinal cord is made up of:
A) Myelinated nerve fibres
B) Non-myelinated nerve fibres
C) Myelinated nerve tracts
D) Myelinated nerve fibres or tracts
Q.83 It is centre of great many reflexes and it serves as a pathway for conduction of impulses to and from different parts of the body and brain:
A) Spinal cord
B) Medulla oblongata
C) Cerebellum
D) Brain
Q.84 It acts as relay centre in brain:
A) Thalamus
B) Mid brain
C) Pons
D) Thalamus and mid brain
Q.85 PNS comprises of ______ and _____which may form ganglia and the nerves:
A) Sensory neurons, associative neurons
B) Associative neurons, sensory neurons
C) Sensory neurons, motor neurons
D) Somatic neurons, autonomic neurons
Q.86 These are bundles of axons or dendrites bound by connective tissue:
A) The nerves C) Grey matters
B) The ganglia D) Spinal cord
Q.87 It may be sensory, motor or mixed, depending upon the direction of impulse they conduct:
A) Neuron C) Nerve
B) Nerve cell D) Ganglia
Q.88 The stimulus received by the receptors in the skin (which are the endings of sensory neurons) is passed to the motor neurons via _______ neurons:
A) Inter or somatic
B) Sympathetic & Parasympathetic
C) Somatic or autonomic
D) Inter or associative
Q.89 Biochemical reactions are regulated by:
A) Enzymes C) Hormones
B) Coenzymes D) Cofactors
Q.90 Long term changes in our body are regulated by:
A) Enzyme C) CNS
B) Neurons D) Hormone
ANSWER KEY
1 B 24 A 47 A 70 C
2 A 25 C 48 D 71 C
3 A 26 B 49 A 72 A
4 B 27 A 50 C 73 D
5 B 28 B 51 B 74 B
6 D 29 C 52 A 75 A
7 B 30 A 53 D 76 C
8 C 31 C 54 B 77 C
9 B 32 B 55 B 78 B
10 C 33 C 56 D 79 C
11 B 34 B 57 C 80 A
12 A 35 C 58 B 81 C
13 D 36 D 59 C 82 D
14 D 37 B 60 C 83 A
15 D 38 D 61 C 84 D
16 B 39 A 62 C 85 C
17 A 40 B 63 A 86 A
18 C 41 C 64 A 87 C
19 C 42 C 65 D 88 D
20 C 43 A 66 A 89 C
21 D 44 C 67 A 90 D
22 B 45 B 68 A
23 A 46 C 69 A
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