Biology is the study of life and living things. It can be divided into different areas that look at the structure, function, anatomy, and behavior of organisms.
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Question 921:
Most fishes do not sink in water because of the presences of:
I. swim bladder
II. air bladder
III. air sacs
IV. air in spongy bones
Options:
A) II and III are correct
B) I and II are correct
C) I, II, III and IV are correct
D) III and IV are correct
Show Answer
The correct answer is B .
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Question 922: A tissue is composed of a group of
Options:
A) similar cells
B) tissues
C) systems
D) related organs
Show Answer
The correct answer is A .
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Question 923: Treatment of a poor soil with lime supplies
Options:
A) Sulphur
B) Calcium
C) Phosphorus
D) Sodium
E) Nitrogen
Show Answer
The correct answer is B .
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Question 924: The spots and stripes of the leopard and tiger are example of
Options:
A) cryptic colouration
B) warning colouration
C) disruptive colouration
D) counter shading
Show Answer
The correct answer is C .
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Question 925:
The type of nutrition shown by spirogyra is
Options:
A) Symbiosis
B) Holozoic
C) Chemosynthetic
D) Holophytic
Show Answer
The correct answer is D .
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Question 926: The vilius in the small intestine is significant because it
Options:
A) increase the surface area for absorption
B) increase the surface area for digestion
C) assists in mixing digested food
D) assists in filtering undigested food
Show Answer
The correct answer is A .
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Question 927: Gaseous exchange in the lungs takes place in the
Options:
A) alveoli
B) bronchi
C) bronchioles
D) trachea
Show Answer
The correct answer is A .
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Question 928: A major limitation in the use of the potometer for measuring the rate of transpiration is that
Options:
A) it is made of breakable glass materials
B) it measures the rate of water intake
C) it measure the rate of water loss throuh the stern only
D) the movement of the air buble in the potometer cannot be timed accurately
Show Answer
The correct answer is D .
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Question 929: Which of the following is NOT regarded as a pollutant on land or in the air?
Options:
A) smoke
B) noise
C) sulphur (IV) oxide
D) carbon monoxide
E) nitrogen
Show Answer
The correct answer is E .
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Question 930: Normally the flow of blood is NEVER from
Options:
A) artery to arterioles
B) arterioles to capillaries
C) capillaries to venules
D) arteerioles to the artery
E) venules to the vein
Show Answer
The correct answer is D .