CLASS: X NCERT (CBSE)
BIOLOGY
Control and Coordination
Question (1): The cells in our body that can be over a foot long are _____.
1. muscle cells
2. nerve cells
3. bone cells
4. blood cells
Ans: 2
Question (2): The substance that accelerates the growth in the stem is ____.
1. auxin
2. cytokinin
3. enzyme
4. vitamin
Ans: 1
Question (3): Learning is related to ______________.
1. hypothalamus
2. thalamus
3. cerebrum
4. cerebellum
Ans: 3
Question (4): Male hormone is ________________.
1. oestrogen
2. progesterone
3. adrenaline
4. testosterone
Ans: 4
Question (5): Endocrine glands are those which pour their secretions into _________________.
1. blood
2. ducts
3. sinuses
4. any of the above
Ans: 1
Question (6): In reflex action, the reflex arc is formed by ____________.
1. muscles – receptor – brain
2. muscles – effector – brain
3. receptor – spinal cord – muscles
4. spinal cord – receptor – muscles
Ans: 3
Question (7): Auxins are _________________.
1. vitamins
2. enzymes
3. proteins
4. hormones
Ans: 4
Question (8): The cerebellum is concerned with _______________.
1. conditioning
2. memory
3. coordination and precision
4. intelligence
Ans: 3
Question (9): The endocrine gland also known as ‘master gland’ is ______.
1. hypothalamus
2. pituitary
3. pancreas
4. adrenal
Ans: 2
Question (10): Which of the following acts as both endocrine and exocrine glands?
1. pituitary
2. adrenal
3. pancreas
4. ovaries
Ans: 3
Question (11): Cerebral hemispheres are centres of __________.
1. balance
2. smell
3. taste
4. thinking
Ans: 4
Question (12): Adrenaline increases _____________.
1. heart rate
2. blood pressure
3. amount of glucose in blood
4. all the above
Ans: 4
Question (13): Junction of two neurons is called _____________.
1. synapse
2. end plate
3. axon
4. dendrite
Ans: 1
Question (14): Gibberellins were discovered from ______________.
1. bacteria
2. fungi
3. algae
4. mosses
Ans: 2
Question (15): Growth hormone is produced in ___________.
1. hypothalamus
2. pituitary
3. pancreas
4. thyroid
Ans: 2
Question (16): The hormone secreted by the alpha cells of islets of Langerhans is _____________.
1. glucagon
2. insulin
3. adrenaline
4. thymosin
Ans: 1
Question (17): An involuntary response to a stimulus is known as _______.
1. jerking
2. reflex
3. conditioning
4. answer
Ans: 2
Question (18): The CNS consists of _______________.
1. brain
2. spinal cord
3. brain and spinal cord
4. brain, spinal cord and all the nerves
Ans: 3
Question (19): An example of a sex hormone is _________________.
1. testosterone
2. insulin
3. thyroxin
4. thymosin
Ans: 1
Question (20): Cerebrum is present in the _______________.
1. fore brain
2. mid brain
3. hind brain
4. partly in a and b each
Ans: 1
Question (21): Cerebellum is situated in ___________.
1. fore brain
2. mid brain
3. hind brain
4. partly in a and b each
Ans: 3
Question (22): Medulla oblongata is situated in ___________.
1. fore brain
2. mid brain
3. hind brain
4. partly in b and c each
Ans: 3
Question (23): The grey matter consists of ___________.
1. nerve cells
2. nerve cell bodies
3. nerve cell bodies and dendrites
4. nerve cell bodies, dendrites and axons
Ans: 3
Question (24): There are ___________ pairs of cranial nerves.
1. 21
2. 31
3. 41
4. 12
Ans: 4
Question (25): There are ______________ pairs of spinal nerves.
1. 12
2.
31
3. 21
4. 8
Ans: 2
Question (26): The hormone that is used to keep flowers fresh is _______.
1. auxin
2. gibberellic acid
3. cytokinin
4. ethylene
Ans: 3
Question (27): The hormone that speeds up the ripening process is ______.
1. auxin
2. gibberelin
3. cytokinin
4. ethylene
Ans: 4
Question (28): A spinal nerve is a ________________ nerve.
1. sensory
2. motor
3. mixed
4. long
Ans: 3
Question (29): Ganglion is made up of ___________.
1. dendrites
2. axons
3. cytons
4. neurons
Ans: 3
Question (30): The preganglionic fibres and the postganglionic fibres are a part of ____________.
1. central nervous system
2. peripheral nervous system
3. autonomous nervous system
4. endocrine system
Ans: 3
Question (31): Afferent nerves are also called the _______________.
1. motor nerves
2. sensory nerves
3. mixed nerves
4. association nerves
Ans: 2
Question (32): Efferent nerves are also called as _____________.
1. motor nerves
2. sensory nerves
3. mixed nerves
4. association nerves
Ans: 1
Question (33): Ganglia are present in _______________.
1. the dorsal root of spinal cord
2. the ventral root of spinal cord
3. both a and b
4. neither a nor b
Ans: 1
Question (34): The hormone that causes blood sugar level to fall is _______________.
1. glucagon
2. insulin
3. somatostatin
4. adrenalin
Ans: 2
Question (35): Hormone produced by the ovarian follicle is __________ and in addition ________ is produced by the corpus luteum.
1. oestrogen, progesterone
2. progesterone, oestorgen
3. oestrogen, thyroxin
4. progesterone, thyroxin
Ans: 1
Question (36): The gland that plays a role in ‘fight or flight response’ is _________________.
1. pancreas
2. pituitary
3. adrenal cortex
4. adrenal medulla
Ans: 4
Question (37): The unit of the nervous system is _______________.
1. cyton
2. dendron
3. axon
4. neuron
Ans: 4
Question (38): The processes that conduct signals towards the nerve cell body are the ___________.
1. fibres
2. axons
3. dendrites
4. all the above
Ans: 3
Question (39): The nodes of Ranvier are ________________.
1. covering of the nerve fibre
2. swelling along the nerve fibre
3. gaps in the cover of the nerve fibre
4. collection of nerves in the heart
Ans: 3
Question (40): At the synapses, the impulses are always passed from the __________________.
1. axon to the dendrites
2. dendrites to the axon
3. either way is possible
4. cyton to the dendrites
Ans: 1
Question (41): The lobes – parietal, temporal, frontal and occipetal belong to _________________.
1. medulla oblongata
2. cerebrum
3. cerebellum
4. hypothalamus
Ans: 2
Question (42): Unconditioned reflex is controlled by the ______________.
1. brain
2. spinal cord
3. both a and b
4. the autonomic nervous system
Ans: 2
Question (43): Blinking of eyes is a ________________.
1. reflex action
2. involuntary action
3. voluntary action only
4. can be a or b
Ans: 2
Question (44): The outermost covering of the nerve is called the ________.
1. perineurium
2. epineurium
3. myelin sheath
4. capsule
Ans: 2
Question (45): The box enclosing the brain is called the _____________.
1. skull
2. head
3. cranium
4. vertebral column
Ans: 3
Question (46): The kind of nerve carrying impulses from the brain to a gland or a muscle is called ______.
1. affector
2. effector
3. mixed
4. none of the above
Ans: 2
