2018 - JAMB Biology Past Questions and Answers - page 2
11
Which of the following structures is not a skeletal material?
A
Chitin
B
Cartilage
C
Bone
D
Muscle
12
The reason why the flow of blood through the capillaries is very slow is
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
13
Which of the following groups of organisms has kidney as the excretory organ?
A
Fishes, amphibians, birds, man
B
Fishes, amphibians, annelids, insects
C
Fishes, reptiles, birds, tapeworm
D
Fishes, protozoans, amphibians, man
14
Which of the following features is not a characteristic of arteries? Arteries
A
possess valves 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
15
The graph below shows the results of a laboratory investigation which measured the body temperatures of a lizard and a bird under changing artificial conditions. Use it to answer the question.
Which of the statements below is valid?
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
16
The graph below shows the results of a laboratory investigation which measured the body temperatures of a lizard and a bird under changing artificial conditions. Use it to answer the question.
What physiological term can used to describe the regulation of the body temperature of the of the Lizard?
A
Homeostasis
B
Homoithermy
C
Poikilothermy
D
Osmoregulation
17
The reason why hospitals use saline solutions as drip Instead of water is
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
18
The part of the ear which contains nerve cells sensitive to sound vibrations is the
A
cochlea
B
ampulla
C
tympanum
D
malleus
19
Spectacles with convex lenses correct long-sightedness by
A
converging the light rays before they enter the eye
B
diverging the light rays before they enter the eye
C
reducing the light intensity before it enters the eye
D
increasing the light intensity before it enters the eye
20
A seed of a flowering plant can best be described as
A
radicle and plumule
B
the developed ovule
C
the embryo and endosperm
D
developed ovary
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