Class 10th Biology MCQs & Questions
Chapter: 12
“Coordination and Control”
- How many types of coordination in organisms?
a) One
b) Two
c) Three
d) Four
Sol: (b) Two - Any change in the environment, which can provoke a response in organisms is called
a) Receptors
b) Coordinators
c) Effectors
d) Stimuli
Sol: (d) Stimuli - The examples of stimuli is/are
a) Heat
b) Sound waves
c) Cold
d) All of these
Sol: (d) All of these - Chemicals in the air are detected by
a) Ears
b) Nose
c) Eyes
d) None of these
Sol: (b) Nose - The tissue or cells that are used to detect particular types of stimuli are called
a) Receptors
b) Stimuli
c) Effectors
d) All of these
Sol: (a) Receptors - The unit of nervous system is called
a) Neuron
b) Nerve cell
c) Both (a) and (b)
d) None of these
Sol: (c) Both (a) and (b) - Processes that carry nerve impulses toward the cell body
a) Axon
b) Dendrite
c) Cell body
d) Nodes of Ranvier
Sol: (b) Dendrite - Processes that carry nerve impulses away from the cell body
a) Dendrite
b) Axons
c) Interneurons
d) None of the above
Sol: (b) Axons - A wave of electrochemical changes that travels along the length of neurons
a) Sensory neuron
b) Interneuron
c) Schwan cells
d) Nerve impulse
Sol: (d) Nerve impulse - Non-myelinated points on an axon is called
a) Nodes of Ranvier
b) Saltatory impulse
c) Myelin sheath
d) All of the above
Sol: (a) Nodes of Ranvier - In a neuron, impulses “jump” over the areas of myelin going from node to node is called
a) Saltatory impulse
b) Jumping impulse
c) Both (a) and (b)
d) None of the above
Sol: (c) Both (a) and (b) - Which neuron has one dendrite and one axon
a) Motor neuron
b) Sensory neuron
c) Interneuron
d) All of the above
Sol: (b) Sensory neuron - Motor neurons have many dendrites and __
a) One axon
b) Two axons
c) Many axons
d) Only five axons
Sol: (a) One axon - Sensory nerves contain the axons of
a) Motor neurons
b) Sensory neurons
c) Mixed neurons
d) Both (a) and (b)
Sol: (b) Sensory neurons - The brain is protected by a bony structure called
a) Cranium
b) Vertebrae
c) Central canal
d) Occipital
Sol: (a) Cranium - The vertebral column covers and protects
a) Spinal cord
b) Cranium
c) Brain
d) Hippocampus
Sol: (a) Spinal cord - The largest part of the human brain is called
a) Cerebellum
b) Cerebrum
c) Thalamus
d) Hypothalamus
Sol: (b) Cerebrum - Hypothalamus is roughly the size of a/an
a) Apple
b) Almond
c) Orange
d) Ball
Sol: (b) Almond - Hypothalamus controls the feelings
a) Pain
b) Pleasure
c) Sorrow
d) All of the above
Sol: (d) All of the above - The thalamus receives sensory impulses except from
a) Ear
b) Nose
c) Eyes
d) None of the above
Sol: (b) Nose - The hippocampus is the structure, deep in the cerebrum, formation of
a) Emotions
b) Intelligence
c) Skeletal muscles
d) New memories
Sol: (d) New memories - The anterior parts of the cerebral hemispheres are called
a) Bulbs
b) Olfactory bulbs
c) Cerebral cortex
d) Grey matter
Sol: (b) Olfactory bulbs - Which part control the thinking , intelligence, and emotions
a) Cerebrum
b) Cerebellum
c) Thalamus
d) Hypothalamus
Sol: (a) Cerebrum - Which lobe control the visual information
a) Parietal
b) Frontal
c) Temporal
d) Occipital
Sol: (d) Occipital - Which lobe is concerned with the hearing and smell
a) Temporal
b) Parietal
c) Occipital
d) Frontal
Sol: (a) Temporal - Which type of matter consists of cell bodies and non-myelinated axons
a) Grey matter
b) White matter
c) Both (a) and (b)
d) Plasma
Sol: (a) Grey matter - Which part of the brain controls the auditory reflexes and posture?
a) Forebrain
b) Midbrain
c) Hindbrain
d) All of the above
Sol: (b) Midbrain - The medulla oblongata, cerebellum, and pons are the parts of
a) Forebrain
b) Midbrain
c) Hindbrain
d) None of the above
Sol: (c) Hindbrain
- Which part of hind brain control vomiting, coughing, and sneezing
a) Cerebrum
b) Cerebellum
c) Pons
d) Medulla oblongata
Sol: (d) Medulla oblongata - The outer region of spinal cord is made of
a) Pons
b) Cerebellum
c) Grey matter
d) White matter
Sol: (d) White matter - What is the length of spinal cord
a) 40 cm
b) 50 cm
c) 40 m
d) 50 mm
Sol: (a) 40 cm - Clusters of cell bodies in the central nervous system
a) Ganglia
b) Nuclei
c) Brain stem
d) None of the above
Sol: (b) Nuclei - Cluster of cell bodies in the peripheral nervous system (PNS)
a) Ganglia
b) Nuclei
c) Motor neuron
d) Mixed neuron
Sol: (a) Ganglia - How many pairs of cranial nerves have human?
a) 11 pairs
b) 12 pairs
c) 20 pairs
d) 31 pairs
Sol: (b) 12 pairs - How many pairs of spinal nerves have human?
a) 34 pairs
b) 21 pairs
c) 12 pairs
d) 31 pairs
Sol: (d) 31 pairs - The pathway conducting impulses from receptor to CNS
a) Sensory pathway
b) Motor pathway
c) None of the above
d) Both (a) and (b)
Sol: (a) Sensory pathway - Which type of nervous system deals with emergency
a) Autonomic nervous system
b) Sympathetic nervous system
c) Parasympathetic nervous system
d) Central nervous system
Sol: (b) Sympathetic nervous system - The responses which are not under conscious control are called
a) Voluntary action
b) Involuntary action
c) Reflex action
d) None of the above
Sol: (b) Involuntary action - An involuntary or rapid response is produced especially when touching a hot object
a) Involuntary action
b) Voluntary action
c) Reflex action
d) Reflex arc
Sol: (c) Reflex action - The pathway followed by the nerve impulses for producing a reflex action is called
a) Reflex mechanism
b) Reflex arc
c) Neuron
d) Sensory neuron
Sol: (b) Reflex arc - Which part of eye gives most of the white color
a) Cornea
b) Iris
c) Pupil
d) Sclera
Sol: (d) Sclera - Which part of the eye bends light and helps in focus
a) Cornea
b) Sclera
c) Iris
d) Pupil
Sol: (a) Cornea - Behind the cornea dark muscular structure is
a) Choroid
b) Iris
c) Sclera
d) Pupil
Sol: (b) Iris - Which part of the eye controls the size of the pupil
a) Iris
b) Fovea
c) Rhodopsin
d) Iodopdin
Sol: (a) Iris - Photosensitive cells in the eye called rods and cons present in
a) Fovea
b) Retina
c) Iris
d) Pupil
Sol: (b) Retina - Rods are sensitive to which light
a) Dim
b) Bright
c) Both (a) and (b)
d) None of the above
Sol: (a) Dim - Cons are sensitive to which light
a) Dim
b) Bright
c) Blindspot
d) None of the above
Sol: (b) Bright light - A point on the retina where the optic nerve enters the retina and there are no rods and cons at that point is called
a) Fovea
b) Rhodopsin
c) Blindspot
d) Iris
Sol: (c) Blind spot - Which type of fluid maintains the shape of an eye
a) Aqueous humour
b) Vitreous humour
c) Iodopsin
d) None of the above
Sol: (b) Vitreous humour - Which type of vitamin deficiency causes night blindness
a) Vitamin A
b) Vitamin B
c) Vitamin K
d) Vitamin E
Sol: (a) Vitamin A - A person not able to see a distant object clearly called
a) Myopia
b) Short sight
c) Hypermetropia
d) Both (a) and (b)
Sol: (d) Both (a) and (b) - A person is not able to see a near object clearly
a) Long sight
b) Hypermetropia
c) Both (a) and (b)
d) Myopia
Sol: (c) Both (a) and (b) - Which lens is used for hypermetropia
a) Concave lens
b) Convex lens
c) Converging lens
d) Contact lens
Sol: (b) Convex lens - Study of diseases and surgery of eyes are called
a) Zoology
b) Ornithology
c) Cytology
d) Ophthalmology
Sol: (d) Ophthalmology - How many diseases of the eyes were described by Ali ibn Isa?
a) 130
b) 143
c) 133
d) 110
Sol: (a) 130 - Ali ibn Isa described drugs __ to treat diseases.
a) 133
b) 143
c) 123
d) 153
Sol: (b) 143 - Who is the father of optics?
a) Ali ibn Isa
b) Jabir bin Hayyan
c) Alexander Fleming
d) Ibn-al-Haytham
Sol: (d) Ibn-al-Haytham - The study of the behavior of light is called
a) Ophthalmology
b) Hematology
c) Entomology
d) Optics
Sol: (d) Optics - Who described the principles of pinhole camera
a) Ibn-al-Haytham
b) Robert Brown
c) Bu Ali Sina
d) Dr. Abdul Qadeer Khan
Sol: (a) Ibn-al-Haytham - Auditory canal ends in
a) Pinna
b) Eardrum
c) Cochlea
d) Incus
Sol: (b) Eardrum - In the auditory canal’s wall special glands produce
a) Blood
b) Wax
c) Mucous
d) None of the above
Sol: (b) Wax - The smallest bone in the human body is
a) Incus
b) Malleus
c) Cochlea
d) Stapes
Sol: (d) Stapes - How many ducts are in the cochlea
a) One
b) Two
c) Three
d) Four
Sol: (c) Three - To which part of the ear does the tympanum belong?
a) External ear
b) Middle ear
c) Inner ear
d) Both (a) and (b)
Sol: (a) External ear - The type of gland that has ducts for releasing secretions is called
a) Exocrine gland
b) Endocrine gland
c) Both (a) and (b)
d) None of the above
Sol: (a) Exocrine gland - The shaped gland is
a) Thyroid gland
b) Pituitary gland
c) Hypophysis
d) Both (b) and (c)
Sol: (d) Both (b) and (c) - Growth hormone is secreted by
a) Pituitary gland
b) Anterior pituitary gland
c) Posterior pituitary gland
d) None of the above
Sol: (b) Anterior pituitary gland - A deficiency of growth hormone is called
a) Gigantism
b) Dwarfism
c) Acromegaly
d) All of the above
Sol: (b) Dwarfism - If height increases by growth hormone is called
a) Gigantism
b) Dwarfism
c) Calcitonin
d) Thyroxin
Sol: (a) Gigantism - Acromegaly includes
a) Large hands
b) Large feet
c) Jawbones
d) All of the above
Sol: (d) All of the above - Which hormone is responsible for childbirth
a) Oxytocin
b) Adrenaline
c) Calcitonin
d) Somatotrophin
Sol: (a) Oxytocin - Which hormone is responsible for milk production
a) Oxytocin
b) Prolactin
c) Insulin
d) Testosterone
Sol: (b) Prolactin - Which hormone is responsible for sleep
a) Melatonin
b) Progesterone
c) Estrogen
d) Oxytocin
Sol: (a) Melatonin - Which hormone is responsible for decreased level of calcium ions in the blood
a) Calcitonin
b) Adrenaline
c) Insulin
d) Estrogen
Sol: (a) Calcitonin - How many adrenal glands are situated above kidney?
a) One
b) Two
c) Three
d) Four
Sol: (b) Two - Which hormone is called emergency hormone
a) Parathormone
b) Oxytocin
c) Estrogen
d) Adrenaline
Sol: (d) Adrenaline - Which hormone is responsible for balance of glucose
a) Insulin
b) Glucagon
c) Both (a) and (b)
d) None of the above
Sol: (c) Both (a) and (b) - The main male sex hormone is
a) Testosterone
b) Oxytocin
c) Adrenalin
d) Insulin
Sol: (a) Testosterone - The complete loss of functions by one or more muscles is called
a) Epilepsy
b) Paralysis
c) Corona
d) Dengue
Sol: (b) Paralysis - Insulin and glucagon is produced in the
a) Liver
b) Pancreas
c) Hypothalamus
d) Posterior pituitary
Sol: (b) Pancreas - Passengers that carry nerve impulses away from the cell body are called
a) Axons
b) Synapses
c) Dendrites
d) Myelin sheath
Sol: (a) Axons
Important definitions in this chapter:
Define neurons
Define hippocampus
Define olfactory bulbs
Define brain stem
Define reflex arc
Define blind spot
Define hormone
Define acromegaly
Define dwarfism
Define gigantism
Define vasopressin
Read More:
What can we do to protect wildlife?
9th Biology
Chapter I: Introduction to Biology
Chapter 2: Solving a biological problem
Chapter 3: Bio-diversity