2013 - JAMB Biology Past Questions and Answers - page 3
21
The blood circulatory system of vertebrates consists of
A
heart, arteries, capillaries and veins
B
heart, aorta, capillaries and veins
C
heart, aorta, arteries and veins
D
heart, vena cava, arteries, and veins
correct option: a
Users' Answers & Comments22
A plant tissue that carries water and mineral salts is the
A
cambium
B
xylem
C
cortex
D
phloem
correct option: b
Users' Answers & Comments23
Which of the following helps in the clotting of blood?
A
Red blood cells
B
White blood cells
C
Plasma
D
Platelets
correct option: d
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The part of the mammalian skin involved in excretion is the
A
sweat glands
B
malpighian layer
C
sebaceous gland
D
horny layer
correct option: a
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Which of the following forms about 55% of the volume of the blood in man?
A
leucocytes
B
platelets
C
plasma
D
erythrocytes
correct option: c
Users' Answers & Comments26
Which of the following is a waste product of an insect?
A
Alkaloids
B
Uric acid
C
Sweat
D
Mucilage
correct option: b
Users' Answers & Comments27
The main structure in vertebrates that supports and protects the body is the
A
skeleton
B
ligament
C
muscle
D
joint
correct option: a
Users' Answers & Comments28
The chitin in the exoskeleton of many arthropods is strengthened by
A
lids
B
proteins
C
calcium compounds
D
organic salt
correct option: c
Users' Answers & Comments29
The transfer of pollen grains from the anther to a sigma is
A
propagation
B
placentation
C
pollination
D
fertilization
correct option: c
Users' Answers & Comments30
The male reproductive organ of a flower is the
A
carpel
B
stamen
C
petal
D
sepal
correct option: b
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