BIOLOGY (2018) | Study Mode

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Question 11
A
Chitin
B
Cartilage
C
Bone
D
Muscle
Explanation

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Correct option: D
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Question 12
A
because the walls of capillaries are very thin
B

to avoid high blood pressure

C
to ensure that the individual does not get dizzy
D
to allow adequate time for exchange of materials
Explanation

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Correct option: D
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Question 13
A
Fishes, amphibians, birds, man
B
Fishes, amphibians, annelids, insects
C
Fishes, reptiles, birds, tapeworms
D
Fishes protozoans, amphibians, man
Explanation

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Correct option: A
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Question 14
A
possess values at internals throughout their length.
B
have thick muscular and elastic walls
C
carry blood away from the heart
D
transport oxygenated blood with the exception of the pulmonary artery.
Explanation

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Correct option: A
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Question 15
BIOLOGY (2018) Q 15 image
A

The bird's blood was always warmer than that of the lizard

B

The body temperature of the bird varied less than that of the lizard during changes in environmental temperature

C

The body temperature of the bird remained constant despite changes in environmental temperature

D

The body temperature of the lizard was always close to that of the environmental temperature

Explanation

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Correct option: C
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Question 16
BIOLOGY (2018) Q 16 image
A
Homeostasis
B
Homeothermy
C
Poikilothermy
D
Osmoregulation
Explanation

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Correct option: C
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Question 17
A
because salt is a preservative
B
to prevent contamination of the body
C
to maintain the composition of body fluids
D
to increase the number of blood cells
Explanation

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Correct option: C
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Question 18
A
cochlea
B
ampulla
C
tympanum
D
malleus
Explanation

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Correct option: A
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Question 19
A
converging the Light rays before they enter the eye
B
diverging the light rays before they enter the eye
C
reducing light intensity before it enters the eye
D
increasing light intensity before it enters the eye
Explanation

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Correct option: A
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Question 20
A
radicle and plumule
B
the developed ovule
C
the embryo and endosperm
D
developed ovary
Explanation

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Correct option: B

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