Control and coordination
Question 1.
Assertion: Brain is a delicate organ which is protected from injury. Reason: The bony box protects the brain from any shock.
(a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
(e) Both A and R are false.
Answer
(c) A is true but R is false
Question 2.
Assertion: Reflex Arc works faster than thinking process of brain.
Reason: Reflex Arc works in case of those animals who donot have
thinking process.
(a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false. (d) A is false but R is true.
(e) Both A and R are false.
Answer
(c) A is true but R is false.
Question 3.
Which of the following acts as both endocrine and exocrine glands?
(a) Adrenal
(b) Pituitary
(c) Ovaries
(d) Pancreas
Answer
(d) Pancreas
Question 4.
Which of the following is not associated with growth of plant?
(a) Auxin
(b) Gibberellins
(c) Cytokinins
(d) Abscisic acid
One of the functions of the Neuroglial cells is to protect and support _________
Nephrons
Myoid cells
Neurons
None of the above
The abundant inhibitory neurotransmitter found in the CNS is ________
Gamma-glutamyltransferase
Gamma-linolenic acid
Gamma-Aminobutyric acid
None of the above
There are ____ laminae present in the spinal cord’s grey matter
2
4
6
10
The thalamus and the hypothalamus are located in the _________
Brain stem
Cerebrum
Cerebellum
Diencephalon
One of the actions of the parasympathetic nervous system is
Inhibits peristalsis
Constriction of Pupils
Dilates Bronchioles
Sweat secretion
The gap in the myelin sheath between adjacent Schwann cells is called ____
Soma
Dendrite
Node of Ranvier
None of these
Synaptic vesicles discharge _________ at the neuromuscular junction.
Acetylcholine
Adrenaline
Estradiol
Testosterone
The area on the left hemisphere related to speech is
Amygdala
Broca’s Area
Occipital lobe
None of the above
When cocaine is used as a stimulant, it interferes with the CNS at the reuptake of the _____ at the synapses
Testosterone
Dopamine
Adrenaline
None of the above
Smooth muscles, cardiac muscles and organs are regulated by _______
Central nervous system
Parasympathetic nervous system
Sympathetic nervous system
Autonomic system
Neurilemma cells are also called _______
Photoreceptors
Odontoblasts
Ganglions
Schwann Cells
Neurotransmitters, released by the presynaptic neurons bind to the receptors on the ____
Postsynaptic membrane
Cell body
Post synovial fluid
None of the above
Wernicke’s area is generally associated with
Sight
Motor coordination
Written and spoken language
None of the above
Which of these compounds generates a feeling of well-being and inhibits the sensation of pain
Melatonin
Cortisol
Endorphin
Adrenaline
________ is a hormone that plays a pivotal role in social bonding, sexual reproduction and childbirth.
Oxytocin
Melatonin
Adrenaline
None of the above
(a) Glucagon
(b) Thyroxine
(c) Testosterone
(d) Vasopressin
Answer
(d) Vasopressin
Question 6.
The main effect of cytokinin in plants is
to
(a) improve the quality of fruits
(b) prevent the growth of lateral buds (c) regulate opening and closing
of
stomata
(d) stimulate cell division
Answer
(d) stimulate cell division
Question 7.
Reflex actions are mediated through
(a) brain
(b) effectors
(c) spinal cord
(d) receptors
Answer
(c) spinal cord
Question 8.
How many pairs of cranial nerves are
present in man?
(a) 12 (b) 21
(c) 31
(d) 41
Answer
(a) 12
Question 9.
Any change in the environment to which an organism responds is called
(a) stimulus
(b) coordination
(c) response (d) hormone
Answer
(a) stimulus
Question 10.
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