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MEDIUM
ENGLISH
Biology
Normal action potential of a neuronal cell is ___________?
A
plus 50 mv
Option A
B
plus 60 mv
Option B
C
plus 70 mv
Option C
D
plus 80 mv
Option D
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MEDIUM
ENGLISH
Biology
Number of pairs of cranial nerves is__________?
A
10
Option A
B
11
Option B
C
12
Option C
D
13
Option D
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MEDIUM
ENGLISH
Biology
Na+ -K+ ATPase pump is important for_______________?
A
Maintenance of resting potential
Option A
B
Massive out flux of K+ after depolarization
Option B
C
Recovery of resting potential
Option C
D
Conversion of resting potential into action potential
Option D
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MEDIUM
ENGLISH
Biology
Which of the following has no central nervous system?
A
Hydra
Option A
B
Man
Option B
C
Planaria
Option C
D
Cockroach
Option D
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MEDIUM
ENGLISH
Biology
Maximum speed of nerve impulse transmission is____________?
A
100 m/sec
Option A
B
110 m/sec
Option B
C
120m/sec
Option C
D
130 m/sec.
Option D
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MEDIUM
ENGLISH
Biology
Which of the following are responsible for the detection of changes in environment?
A
Receptors
Option A
B
Neurons
Option B
C
Effectors
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Biology
Any change in the environment of an organism is called___________?
A
Stimulus
Option A
B
Variation
Option B
C
Response
Option C
D
Reaction
Option D
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MEDIUM
ENGLISH
Biology
Co-ordination results in_____________?
A
Regulation of body functions
Option A
B
Organization of body functions
Option B
C
Integration of body functions
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Biology
Which of the followings are effectors______________?
A
Muscles
Option A
B
Glands
Option B
C
Sensory organs
Option C
D
Both ‘a’ & ‘b’
Option D
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MEDIUM
ENGLISH
Biology
Hydra has___________?
A
Brain
Option A
B
Nerves
Option B
C
Neuron-cells
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Biology
Co-ordination in man is brought about by___________?
A
Nervous system
Option A
B
Endocrine system
Option B
C
Both of these
Option C
D
none of these.
Option D
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MEDIUM
ENGLISH
Biology
Which of the followings is missing from the nervous system of planaria_____________?
A
Ganglia
Option A
B
Longitudinal nerves
Option B
C
Lateral nerves
Option C
D
none of these
Option D
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MEDIUM
ENGLISH
Biology
Which of the following transmits nerve impulse from receptors to central nervous system?
A
Sensory neuron
Option A
B
Motor neuron
Option B
C
Associative neuron
Option C
D
none of these.
Option D
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MEDIUM
ENGLISH
Biology
In which of the following neurons length of dendrite is greater than axon_______________?
A
Sensory neuron
Option A
B
Motor neuron
Option B
C
Associative neuron
Option C
D
none of these.
Option D
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MEDIUM
ENGLISH
Biology
Which of the following neuron has a single long dendron?
A
Sensory neuron
Option A
B
Motor neuron
Option B
C
Associative neuron
Option C
D
none of these.
Option D
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MEDIUM
ENGLISH
Biology
Which of the following cytoplasmic extensions carry the message toward the cell body___________?
A
Dendrites
Option A
B
Axon
Option B
C
Both of these
Option C
D
none of these
Option D
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MEDIUM
ENGLISH
Biology
Microscopic gaps between the neuron endings are called__________?
A
Transmitters
Option A
B
Synapses
Option B
C
Pores
Option C
D
Nodes
Option D
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MEDIUM
ENGLISH
Biology
What is the function of synapse________________?
A
To allow nerve impulse to move in backward direction
Option A
B
To decrease the speed of nerve impulse
Option B
C
To stop the nerve impulse
Option C
D
To provide cytoplasmic connection between neurons.
Option D
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MEDIUM
ENGLISH
Biology
Under resting membrane potentials:
A
Outer surface of neuron is more positive
Option A
B
Inner surface of neuron is more positive
Option B
C
Both of these surfaces are equally positive
Option C
D
none of these.
Option D
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MEDIUM
ENGLISH
Biology
Which of the following ions are involved in the initiation of nerve impulse_______________?
A
Na+
Option A
B
K+
Option B
C
Fe
Option C
D
none of these
Option D
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