2009 - WAEC Biology Past Questions and Answers - page 2
11
The following statements about mitotic cell division are correct except that
A
it occurs only in young cells
B
it occurs In somatic cells
C
the chromosome number of the daughter cell is the same as that of the parent
D
the genetic composition of the mother cell is the same as that of the daughter cell.
12
The longest bone in the body is the
A
humerus
B
femur
C
scapula
D
tibia
13
Which of the following structures is not a skeletal material?
A
Chitin
B
Cartilage
C
Bone
D
Muscle
14
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.
15
Which of the following features is not characteristic of arteries? Arteries
A
possess valves at intervals 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
16
A group of rats placed in an air-tight box for some hours died because they
A
breathed in air containing nitrogen.
B
produced carbon dioxide
C
ran short of energy
D
used up the available oxygen
17
Which of the following organisms have kidney as their excretory organ?
A
Fishes, amphibians, birds, man.
B
Fishes, amphibians, annelids, insects
C
Fishes, reptiles, birds, tapeworms
D
Fishes, protozoans, amphibians, man
18
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
19
What physiological term can he used to
describe the regulation of the body
temperature of the lizard? '
describe the regulation of the body
temperature of the lizard? '
A
Homeostasis
B
Homoithermy
C
Poikilothermy
D
Osmoregulation
20
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 the body fluids
D
to increase the number of blood cells
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