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MEDIUM
ENGLISH
Biology
Roots of a plant show______________?
A
Positive phototropism and negative geotropism
Option A
B
Negative phototropism and positive geotropism
Option B
C
Negative tactic movement and positive tropic movement
Option C
D
Positive geotropism of stem and roots
Option D
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MEDIUM
ENGLISH
Biology
Why skeletal muscles are called striated muscles?
A
They appear darker than smooth muscles by naked eye.
Option A
B
Alternating dark and light bands appear on their surface when visualized by naked eye.
Option B
C
Alternating dark and light bands appear on their surface when visualized via a microscope.
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Biology
Epinasty is controlled by_____________?
A
Gibberellins
Option A
B
Abscisins
Option B
C
Auxins
Option C
D
Cytokinins
Option D
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MEDIUM
ENGLISH
Biology
Which of the following statements is incorrect about skeletal muscle fibers?
A
They are multinucleated.
Option A
B
They are 10 – 100 ?m in diameter & surrounded by sarcolemma
Option B
C
They contain O2 storing molecules called hemoglobin.
Option C
D
Their cytoplasm contains high concentration of carbohydrates
Option D
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MEDIUM
ENGLISH
Biology
Gibberellins is an example of_________________?
A
Growth inhibitor
Option A
B
Growth stimulator
Option B
C
Growth hormone
Option C
D
None of these
Option D
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MEDIUM
ENGLISH
Biology
A smallest contractile unit of muscle contraction called sarcomere is the area between two:
A
H- zone
Option A
B
M- Line
Option B
C
Z- Line
Option C
D
A band
Option D
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MEDIUM
ENGLISH
Biology
Which of the following animal has a hydrostatic skeleton?
A
Earthworm
Option A
B
Round worm
Option B
C
Tape worm
Option C
D
Pin worm
Option D
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MEDIUM
ENGLISH
Biology
Diameter of thick filament is____________?
A
7 nm.
Option A
B
8 nm
Option B
C
16nm
Option C
D
10-100 ?m.
Option D
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MEDIUM
ENGLISH
Biology
In an annelids, the contraction of circular muscle results in___________?
A
Lengthening of the body.
Option A
B
Shortening of the body.
Option B
C
Widening of body
Option C
D
Thinning of body
Option D
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MEDIUM
ENGLISH
Biology
The most important function of troponin is___________?
A
To bind with actin
Option A
B
To bind with tropomyosin.
Option B
C
To bind with Ca2+ ions.
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Biology
Which of the following statement is incorrect about Molluscans?
A
They are surrounded by single or double pieces of hard skeleton.
Option A
B
Their shell grows as the animal grows.
Option B
C
They have hydrostatic skeleton.
Option C
D
They move by tube feet
Option D
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MEDIUM
ENGLISH
Biology
If a cross section of a sarcomere is seen, each myosin is surrounded by how many actin molecules:
A
9
Option A
B
5
Option B
C
6
Option C
D
7
Option D
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MEDIUM
ENGLISH
Biology
Which of the following is present inside the vertebral column______________?
A
Brain
Option A
B
Spinal cord
Option B
C
Both of these
Option C
D
none of these.
Option D
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MEDIUM
ENGLISH
Biology
Which of the following is largest part of brain?
A
Cerebrum
Option A
B
Cerebellum
Option B
C
Medulla oblongata
Option C
D
Thalamus
Option D
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MEDIUM
ENGLISH
Biology
Which of the following is second largest part of the brain_______________?
A
Cerebrum
Option A
B
Cerebellum
Option B
C
Thalamus
Option C
D
Hypothalamus
Option D
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MEDIUM
ENGLISH
Biology
Intelligence is under the control of____________?
A
Cerebrum
Option A
B
Cerebellum
Option B
C
Thalamus
Option C
D
Hypothalamus
Option D
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MEDIUM
ENGLISH
Biology
Which of the following acts as thermoregulator?
A
Cerebrum
Option A
B
Cerebellum
Option B
C
Thalamus
Option C
D
Hypothalamus
Option D
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MEDIUM
ENGLISH
Biology
Which of the following allows precise muscular movements_______________?
A
Cerebrum
Option A
B
Cerebellum
Option B
C
Thalamus
Option C
D
Hypothalamus
Option D
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MEDIUM
ENGLISH
Biology
It is one of the convulsive disorders of nerves which are characterized by abrupt transient symptoms of motor, sensory, psychic or autonomic nature________________?
A
Parkinson’s disease
Option A
B
Epilepsy
Option B
C
Alzheimer’s discease
Option C
D
Dementia
Option D
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MEDIUM
ENGLISH
Biology
Value of resting membrane potential is_____________?
A
0.03 V
Option A
B
0.05 V
Option B
C
0.07 V
Option C
D
0.09V
Option D
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