Biology MCQ
#9 Biology Class 12 Chapter 9 - Control and Coordination MHTCET / NEET MCQ
Chapter 9 - Control and Coordination
(1) The nervous system of mammals uses both electrical and chemical means to send signals via neurons. Which part of the neuron receives impulse ?
(a) Axon(b) Dendron(c) Nodes of Ranvier(d) Neurilemma
Answer-
(b) Dendron
(2) .......... is a neurotransmitter.
(a) ADH(b) Acetyl CoA(c) Acetyl choline(d) Inositol
Answer-
(c) A cetyl choline
(3) The supporting cells that produce myelin sheath in the PNS are .......... .
(a) O ligodendrocytes(b) Satellite cells(c) A strocytes(d) Schwann cells
Answer-
(d) Schwann cells
(4) A collection of neuron cell bodies located outside the CNS is called .......... .
(a) tract(b) nucleus(c) nerve(d) ganglion
Answer-
(d) ganglion
(5) Receptors for protein hormones are located .......... .
(a) in cytoplasm(b) on cell surface(c) in nucleus(d) on Golgi complex
Answer-
(b) on cell surface
(6) I f parathyroid gland of man are removed,the specific result will be .......... .
(a) onset of aging(b) disturbance of Ca++(c) onset of myxoedema(d) elevation of blood pressure
Answer-
(b) disturbance of Ca++
(7) Hormone thyroxine, adrenaline and nonadrenaline are formed from .......... .
(a) Glycine(b) Arginine(c) Ornithine(d) Tyrosine
Answer-
(d) Tyrosine
(8) Pheromones are chemical messengers produced by animals and released outside the body. The odour of these substance affects .......... .
(a) skin colour(b) excretion(c) digestion(d) behaviour
Answer-
(d) behaviour
(9) Which one of the following is a set of discrete endocrine gland ?
(a) Salivary glands, thyroid, adrenal, ovary(b) A drenal, testis, ovary, liver(c) Pituitary, thyroid, adrenal, thymus(d) Pituitary, pancreas, adrenal, thymus
Answer-
(c) Pituitary, thyroid, adrenal, thymus
(10) After ovulation, Graafian follicle changes into .......... .
(a) corpus luteum(b) corpus albicans(c) corpus spongiosum(d) corpus callosum
Answer-
(a) corpus luteum
(11) Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency ?
(a) Parathyroid hormone – Diabetes insipidus(b) Luteinising hormone – D iabetes mellitus(c) Insulin – Hyperglycaemia(d) Thyroxine – Tetany
Answer-
(c) I nsulin – Hyperglycaemia
(12) .......... is in direct contact of brain in humans.
(a) Cranium(b) Dura mater(c) Arachnoid(d) Pia mater
Answer-
(d) Pia mater
(13) The supporting cells that produce myelin sheath in the CNS are .......... .
(a) Oligodendrocytes(b) Satellite cells(c) A strocytes(d) Schwann cells
Answer-
(a) Oligodendrocytes
(14) Human brain develops to its full size at an age of .......... year/s.
(a) 1(b) 6(c) 12(d) 18
Answer-
(b) 6
(15) Telencephalon is the other name of .......... .
(a) pons varolii(b) medulla oblongata(c) cerebrum(d) cerebellum
Answer-
(c) cerebrum
(16) Olfactory tracts merge in olfactory area of .......... lobe.
(a) Frontal(b) Parietal(c) Occipital(d) Temporal
Answer-
(d) Temporal
(17) .......... is the largest commissure of the human brain.
(a) Corpora striata(b) Corpora quadrigemina(c) Habencular commissure(d) Corpus callosum
Answer-
(d) Corpus callosum
(18) Grey matter of the brain shows large collection of .......... .
(a) dendrons(b) cytons(c) axons(d) synapsis
Answer-
(b) cytons
(19) Masses of grey matter in white matter of the cerebrum are called .......... .
(a) corpora striata(b) corpus callosum(c) paracoel(d) basal ganglia
Answer-
(d) basal ganglia
(20) Parietal and temporal lobes of cerebrum are separated by .......... sulcus.
(a) lateral(b) parieto occipital(c) central(d) median longitudinal
Answer-
(a) lateral
(21) .......... area is motor speech area
(a) Acoustic(b) Wernike’s(c) Somato sensory(d) Broca’s
Answer-
(d) Broca’s
(22) Maxillary nerve is a branch of ......... nerve.
(a) Occulomotor(b) Trochlear(c) Trigeminal(d) Facial
Answer-
(c) Trigeminal
(23) Spinal accessory is ..........th cranial nerve.
(a) IV(b) VI(c) IX(d) XI
Answer-
(d) XI
(24) Rotation of eye ball is controlled by .......... .
(a) Optic nerve(b) Pathetic nerve(c) A uditory nerve(d) Hypoglossal nerve
Answer-
(b) Pathetic nerve
(25) The spinal nerves emerge out of vertebral column through .......... .
(a) intervertebral foramina(b) neural canal(c) central canal(d) foramen magnum
Answer-
(a) intervertebral foramina
(26) The neuro transmitter is removed by an enzyme called .......... .
(a) noradrenaline(b) acetylcholine(c) hyaluronidase(d) cholinesterase
Answer-
(d) cholinesterase
(27) The reflex action originates in .......... .
(a) sensory neuron(b) motor neuron(c) receptor organ(d) effector organ
Answer-
(c) receptor organ
(28) Cytons of .......... neurons are located in dorsal root ganglion.
(a) afferent(b) efferent(c) adjustor(d) association
Answer-
(a) afferent
(29) Wall of carotid arteries contain .......... .
(a) thermoreceptors(b) mechanoreceptors(c) baroreceptors(d) statoacoustic receptors
Answer-
(c) baroreceptors
(30) The electronegativity inside the membrane is due to .......... .
(a) less anions than cations(b) less cations than anions(c) bicarbonates(d) carbonates
Answer-
(b) less cations than anions
(31) The neuro transmitters stimulate .......... .
(a) presynaptic membrane(b) cyton(c) axon terminals(d) postsynaptic membrane
Answer-
(d) postsynaptic membrane
(32) .......... is an extero-receptor.
(a) Thermoreceptor(b) Baroreceptor(c) Proprioreceptor(d) Enteroreceptor
Answer-
(a) Thermoreceptor
(33) The .......... are described as windows for brain.
(a) sensory neurons(b) motor neurons(c) effectors(d) sense organs
Answer-
(d) sense organs
(34) Otolith organ is formed of .......... .
(a) cochlea and vestibule(b) sacculus and utriculus(c) semicircular canals(d) ear ossicles
Answer-
(b) sacculus and utriculus
(35) Olfactory bulbs are extensions of brain’s .......... .
(a) cerebrum(b) limbic system(c) RAS(d) pons varolii
Answer-
(b) limbic system
(36) Gustatory senses are noted by .......... .
(a) retina(b) skin(c) nose(d) tongue
Answer-
(d) tongue
(37) .......... is attached to the eardrum.
(a) Malleus(b) Incus(c) Stapes(d) Cochlea
Answer-
(a) Malleus
(38) Eustachian tube is present in .......... .
(a) external ear(b) internal ear(c) heart(d) middle ear
Answer-
(d) middle ear
(39) The internal ear is a fluid filled structure called .......... .
(a) cochlea(b) vestibule(c) labyrinth(d) otolith
Answer-
(c) labyrinth
(40) The space within cochlea is known as .......... .
(a) scala vestibule(b) scala tympani(c) aqueous chamber(d) scala media
Answer-
(d) scala media
(41) Thermoregulatory centre in the body is ……… .
(a) hypothalamus(b) cerebellum(c) spinal cord(d) pituitary
Answer-
(a) hypothalamus
(42) Which of the following is a sensory nerve ?
(a) Vagus(b) Auditory(c) Facial(d) Lumbar
Answer-
(b) Auditory
(43) Chemical transmission in synapse occurs due to ……… .
(a) cholesterol(b) ADH(c) acetylcholine(d) cholinesterase
Answer-
(c) acetylcholine
(44) Voluntary muscular coordination is under the control of ……… .
(a) medulla(b) pons(c) hypothalamus(d) cerebrum
Answer-
(d) cerebrum
(45) All involuntary vital activities are under the control of ……… .
(a) medulla oblongata(b) cerebellum(c) cerebral hemispheres(d) pons Varolii
Answer-
(a) medulla oblongata
(46) Cerebellum is controlling centre for .......... .
(a) muscular strength(b) memory(c) equilibrium(d) muscular coordination
Answer-
(c) equilibrium
(47) Which receptors are present in the retina ?
(a) Chemoreceptors(b) Thermoreceptors(c) Photoreceptors(d) Baroreceptors
Answer-
(c) Photoreceptors
(48) Breathing is controlled by ……… .
(a) trachea(b) medulla oblongata(c) lungs(d) hypothalamus
Answer-
(b) medulla oblongata
(49) Corpus callosum is a nerve fibre bridge which connects ……… .
(a) two cerebral hemispheres(b) cerebrum and cerebellum(c) cerebellum and medulla(d) midbrain and hindbrain
Answer-
(a) two cerebral hemispheres
(50) Centre for thirst and hunger are located in ……… .
(a) cerebrum(b) cerebellum(c) hypothalamus(d) medulla
Answer-
(c) hypothalamus
(51) Gyri in the brain are present in ……… .
(a) cerebral cortex(b) olfactory lobes(c) medulla oblongata(d) hypothalamus
Answer-
(a) cerebral cortex
(52) Which of the following is a structure of mesencephalon ?
(a) Inferior colliculi(b) Thalamus(c) Cerebellum(d) Pons varolii
Answer-
(a) I nferior colliculi
(53) Third ventricle lies in ………. .
(a) midbrain(b) forebrain(c) cerebellum(d) medulla oblongata
Answer-
(b) forebrain
(54) Medulla oblongata encloses ……… .
(a) third ventricle(b) fourth ventricle(c) first ventricle(d) second ventricle
Answer-
(b) fourth ventricle
(55) Loss of memory may result from injury to the ……… .
(a) corpora quadrigemina(b) pons varolii(c) cerebellum(d) cerebrum
Answer-
(d) cerebrum
(56) Terminal non-nervous part of spinal cord is ……… .
(a) funiculus(b) filum terminale(c) cauda equina(d) conus terminalis
Answer-
(b) filum terminale
(57) Which part of the pituitary is neurohaemal organ ?
(a) Pars distalis(b) Infundibulum(c) Pars nervosa(d) Pars intermedia
Answer-
(c) Pars nervosa
(58) Development of secondary sexual characteristics in female is under the control of ……… .
(a) growth hormone(b) TSH(c) estrogen(d) progesterone
Answer-
(c) estrogen
(59) Hypersecretion of STH in children causes …… .
(a) cretinism(b) gigantism(c) dwarfism(d) myxoedema
Answer-
(b) gigantism
(60) Milk secretion in lactating woman is controlled by ……… .
(a) LH(b) prolactin(c) relaxin(d) oestrogen
Answer-
(b) prolactin
(61) ADH is secreted by ……… .
(a) adrenal gland(b) thyroid(c) hypothalamus(d) pancreas
Answer-
(c) hypothalamus
(62) BMR is increased by the administration of ......... .
(a) insulin(b) GH(c) thyroxine(d) testosterone
Answer-
(c) thyroxine
(63) The largest endocrine gland in the body is …… .
(a) pituitary(b) adrenal(c) liver(d) thyroid
Answer-
(d) thyroid
(64) Diabetes insipidus is caused by the deficiency of ……… .
(a) calcitonin(b) oxytocin(c) atrial natriuretic factor(d) vasopressin
Answer-
(d) vasopressin
(65) Simple goitre is caused by the deficiency of .......... .
(a) TSH(b) thyrocalcitonin(c) thyroxine(d) iodine
Answer-
(d) iodine
(66) Exopthalmic goitre is also known as ……… .
(a) Grave’s disease(b) Gull’s disease(c) Simple goitre(d) Cushing’s disease
Answer-
(a) Grave’s disease
(67) Cushing’s syndrome is developed due to ……… .
(a) hyposecretion of ACTH(b) hypersecretion of corticoids(c) hyposecretion of thyroxine(d) hypersecretion of thyroxine
Answer-
(b) hypersecretion of corticoids
(68) Pituitary gland is under the control of ........ .
(a) thyroid(b) adrenal(c) pineal(d) hypothalamus
Answer-
(d) hypothalamus
(69) FSH is secreted by ……… .
(a) pituitary gland(b) thyroid gland(c) ovary(d) adrenal gland
Answer-
(a) pituitary gland
(70) ICSH stimulates ……… .
(a) ovary(b) Leydig cells(c) seminiferous tubules(d) kidney
Answer-
(b) L eydig cells
(71) Which of the following secrete LH ?
(a) Pituitary(b) Thyroid(c) Ovary(d) Adrenal
Answer-
(a) pituitary
(72) TSH regulates ……… secretion.
(a) thyroxine(b) MSH(c) androgens(d) insulin
Answer-
(a) thyroxine
(73) Deficiency of thyroxine in adults cause ……… .
(a) cretinism(b) myxoedema(c) diabetes(d) Cushing’s disease
Answer-
(b) myxoedema
(74) Osmotic pressure and blood pressure are maintained by ……… .
(a) glucocorticoids(b) aldosterone(c) TRF(d) MSH
Answer-
(b) aldosterone
(75) Hormone secreted by corpus luteum is ……… .
(a) aldosterone(b) progesterone(c) testosterone(d) cortisol
Answer-
(b) progesterone
(76) .......... is also called hypophyseal stalk.
(a) Infundibulum(b) Median eminence(c) Pars intermedia(d) Sphenoid bone
Answer-
(a) infundibulum
(77) .......... is like a collar around hypophyseal stalk.
(a) Pars distalis(b) Pars nervosa(c) Pars intermedia(d) Pars tuberalis
Answer-
(d) Pars tuberalis
(78) Herring bodies are the parts of ......... .
(a) hypothalamo-hypophyseal tracts(b) pituicytes(c) hypothalamo-hypophyseal portal system(d) pituitary cleft
Answer-
(a) hypothalamo-hypophyseal tracts
(79) Corticotropin is the other name of ......... .
(a) ACTH(b) STH(c) Aldosterone(d) ADH
Answer-
(a) ACTH
(80) Adrenal failure leads to ......... .
(a) Acromegaly(b) Simmond’s disease(c) Midget(d) Addison’s disease
Answer-
(d) A ddison’s disease
(81) Prolactin inhibiting factor is secreted by ......... .
(a) Hypophysis(b) Hypothalamus(c) Thyroid(d) Mammary glands
Answer-
(b) Hypothalamus
(82) Which one of the following is not applicable to prolactin ?
(a) Mammotropin(b) Lactogenic hormone(c) Somatotropin(d) Luteotropin
Answer-
(c) Somatotropin
(83) ......... is a gonadotropic hormone.
(a) STH(b) LTH(c) ACTH(d) FSH
Answer-
(d) FSH
(84) Rhythmic integrated contractions of jejunum are controlled by .......... .
(a) coherin(b) insulin(c) glucagon(d) ADH
Answer-
(a) coherin
(85) Thyroid gland is derived from ......... of embryo.
(a) ectoderm(b) mesoderm(c) endoderm(d) ecto-endoderm
Answer-
(c) endoderm
(86) D eficiency of thyroxine in infants causes .......... .
(a) Cretinism(b) Grave’s disease(c) Myxoedema(d) Exophthalmos
Answer-
(a) Cretinism
(87) ......... is a hypercalcemic hormone.
(a) PTH(b) TCT(c) Thyroxine(d) ACTH
Answer-
(a) PTH
(88) ......... is a middle layer of adrenal cortex.
(a) Zona fasciculata(b) Zona pellicida(c) Zona glomerulosa(d) Zona reticularis
Answer-
(a) Zona fasciculata
(89) Decrease in the blood calcium level is ........ .
(a) hyperglycemia(b) hypercalcemia(c) hypoglycemia(d) hypocalcemia
Answer-
(d) hypocalcemia
(90) ......... stimulates RBC production.
(a) Aldosterone(b) Cortisol(c) Epinephrine(d) Parathormone
Answer-
(b) Cortisol
(91) Chemicals which are released at the synaptic junction are called .......... .
(a) hormones(b) neurotransmitters(c) cerebrospinal fluid(d) lymph
Answer-
(b) neurotransmitters
(92) Potential difference across resting membrane is negatively charged. This is due to differential distribution of the following ions.
(a) Na+ and K+ ions(b) Ca++ and CI – ions(c) Ca++ and Mg++ ions(d) Mg++ and CI - ions
Answer-
(a) Na+ and K+ ions
(93) Which of the following is not involved in Knee-jerk reflex ?
(a) Muscle spindle(b) Motor neuron(c) Brain(d) Inter neurons
Answer-
(c) Brain
(94) An area in the brain which is associated with strong emotions is ......... .
(a) Cerebral cortex(b) Cerebellum(c) Limbic system(d) Medulla
Answer-
(c) Limbic system
(95) Which is the vitamin present in Rhodopsin ?
(a) Vitamin A(b) Vitamin B(c) Vitamin C(d) Vitamin D
Answer-
(a) Vitamin A
(96) Wax gland present in the ear canal is modified .......... .
(a) Sweat gland(b) Vestibular gland(c) Cowper’s gland(d) Sebaceous gland
Answer-
(d) Sebaceous gland
(97) The part of internal ear responsible for hearing is .......... .
(a) cochlea(b) semicircular canal(c) utriculus(d) sacculus
Answer-
(a) cochlea
(98) The organ of corti is a structure present in .......... .
(a) external ear(b) middle ear(c) semi circular canal(d) cochlea
Answer-
(d) cochlea
(99) Select the right match of endocrine gland and their hormones among the options given below.
A . Pineal i. Epinephrine
B. Thyroid ii. Melatonin
C. Ovary iii. Estrogen
D . Adrenal medulla iv. Tetraiodothyronine
(a) A -iv, B-ii, C-iii, D-i(b) A -ii, B-iv, C-i, D-iii(c) A -iv, B-ii, C-i, D-iii(d) A -ii, B-iv, C-iii, D-i
Answer-
(d) A -ii, B-iv, C-iii, D-i
(100) L isted below are the hormones of anterior pituitary origin. Tick the wrong entry.
(a) Growth hormone(b) FSH(c) Oxytocin(d) ACTH
Answer-
(c) Oxytocin
(101) Mary is about to face an interview. But during the first five minutes before the interview she experiences sweating, increased rate of heartbeat, respiration, etc. Which hormone is responsible for her restlessness ?
(a) Estrogen and progesterone(b) Oxytocin and vasopressin(c) Adrenaline and noradrenaline(d) Insulin and glucagon
Answer-
(c) Adrenaline and noradrenaline
(102) The steroid responsible for balance of water and electrolytes in our body is .......... .
(a) Insulin
(b) Melatonin
(c) Testosterone
(d) Aldosterone
Answer-
(d) Aldosterone
(103) Thymosin is responsible for .......... .
(a) raising the blood sugar level
(b) raising the blood calcium level
(c) increased production of Tlymphocytes
(d) decrease in blood RBC
Answer-
(c) increased production of Tlymphocytes
(104) In the mechanism of action of a protein hormone, one of the second messengers is .......... .
(a) Cyclic AMP
(b) Insulin
(c) T3
(d) Gastrin
Answer-
(a) Cyclic AMP
(105) Leydig cells produce a group of hormones called ......... .
(a) androgens
(b) estrogen
(c) aldosterone
(d) gonadotropins
Answer-
(a) androgens
(106) Corpus luteum secretes a hormone called ......... .
(a) prolactin
(b) progesterone
(c) aldosterone
(d) testosterone
Answer-
(b) progesterone
(107) Cortisol is secreted from .......... .
(a) pancreas
(b) thyroid
(c) adrenal
(d) thymus
Answer-
(c) adrenal
(108) A hormone responsible for normal sleepwake cycle is ......... .
(a) epinephrine
(b) gastrin
(c) melatonin
(d) insulin
Answer-
(c) melatonin
(109) Match the pairs and choose the correct answer among the following options.
A . Epinephrine i. I ncrease in muscle growth
B. Testosterone ii. D ecrease in blood pressure
C. Glucagon iii. D ecrease in liver glycogen content
D . Atrial natriuretic factor iv. Increase in heartbeat
(a) A -ii, B-i, C-iii, D-iv
(b) A -iv, B-i, C-iii, D-ii
(c) A -i, B-ii, C-iii, D-iv
(d) A -i, B-iv, C-ii, D-iii
Answer-
(b) A -iv, B-i, C-iii, D-ii
(110) Blood calcium level is a resultant of how much dietary calcium is absorbed, how much calcium is lost in the urine, how much bone dissolves releasing calcium into the blood and how much calcium from blood enters tissues. Several factors play an important role in these processes. Mark the one which has no role.
(a) Vitamin D
(b) Parathyroid hormone
(c) Thyrocalcitonin
(d) Thymosin
Answer-
(d) Thymosin
(111) All the following tissues in mammals except one consists of a central ‘medullary’ region surrounded by a cortical region. Mark the wrong entry.
(a) Ovary
(b) Adrenal
(c) Liver
(d) Kidney
Answer-
(c) Liver
