WAEC - Biology (1999)

1
Which of the following organisms does not exist as a single cell?
Answer
(C)
Volvox
2
Which of the following features of Paramecium is not an advancement over Amoeba? The possession of
Answer
(D)
nucleus
3
Which of the following diseases results from the deficiency of insulin?
Answer
(D)
Diabetes
4
Root hairs absorb water from the soil by
Answer
(B)
osmosis
5
One of the similarities between algae and mosses is their possession of
Answer
(A)
chlorophyll
6
The vessel that carries blood from the heart to the lungs is called an artery because it
Answer
(C)
carries blood away from the heart
7
During anaerobic respiration in skeletal muscles, pyruvic acid is
Answer
(A)
reduced to lactic acid
8
Which of the following organisms exhibits 'the stages listed above during conjugation?
Answer
(C)
Spirogyra
9
Which of the following arrangements is the correct sequence of the process?
Answer
(A)
II, I, IV, V and III
10
The teeth used for tearing and cutting are
Answer
(D)
canine and incisors
11
Turgor pressure occurs in a cell when the?
Answer
(A)
volume of its cell sap increases
12
Which of the following bones is illustrated in the diagram?
Answer
(D)
Scapula
13
The part labelled l in the diagram is for the attachment of
Answer
(C)
shoulder muscles
14

Which of the following bones forms a joint at the point labelled II in the diagram?

Answer
(A)
Humerus
15
Which of the following is correct about the transverse section of a vein, when compared with that of an
artery?
Answer
(D)
There are valves in veins but not in arteries.
16
Terrestrial plants exchange gases through the following except
Answer
(A)
chloroplast
17
Glomerular nitrate contains
Answer
(D)
urea
18
Which of the following is not a function of the liver in mammals?
Answer
(D)
Filtration of urea from the blood.
19
Iodine is needed by a patient suffering from a malfunctioning of the
Answer
(B)
thyroid gland
20
The medulla oblongata controls all the following except
Answer
(D)
balance and posture
21
Which of the following statements about short sight is not correct?
Answer
(A)
The eyeball is too short
22
Hypermetropia is corrected by the use of
Answer
(B)
convex lenses
23
The structure labelled I is the
Answer
(A)
oviduct
24
In which of the labelled structures does implantation take place?
Answer
(C)
IV
25
Which of the following indicates the direction of the movement of a sperm
introduced into the female reproductive system?
Answer
(B)
VI → V → IV → I
26
Which of the labelled parts is responsible for the release of ripe ovum?
Answer
(B)
III
27
During germination of seeds water is taken by the process of
Answer
(C)
imbibition
28
Which of the following is not a characteristics feature of a wind dispersed fruit?
Answer
(D)
Buoyancy
29
During photosynthesis, light energy is always absorbed by the
Answer
(C)
chlorophyll
30
Which of the above factors can be a limiting factor for the process to proceed?
Answer
(A)
I and II only
31
The factors required for the dark phase of photosynthesis are
Answer
(C)
III, IV and V only
32
In water- culture experiments the culture solutions are protected from sunlight in order to
Answer
(B)
prevent algae from growing in the solution
33
The importance of a balanced diet is to
Answer
(D)
provide good health for an individual
34
The dentition of a herbivore is distinct from that of other animals due to the presence of
Answer
(A)
diastema
35
Which of the following statements is true?
Answer
(C)
Pepsin acts on proteins to give peptide
36
Which of the following organisms can be found in fresh water habitat?
Answer
(D)
Spirogyra and pond skater
37
Which of the following is not a biotic factor?
Answer
(D)
Pressure
38
Desert plants are usually called
Answer
(C)
xerophytes
39
The secchi disc is used to measure
Answer
(C)
turbidity of water
40
Soil factors in an ecosystem are referred to as
Answer
(D)
edaphic
41
A known weight of soil sample was oven-dried to obtain a constant weight. The loss in weight was due to
loss of
Answer
(C)
water and organic matter
42
Carbon is added to the atmosphere by the following processes except
Answer
(C)
photosynthesis
43
Which of the following is a means of measuring primary production?
Answer
(D)
harvested plants in a unit area
44
A situation whereby some mammals remain inactive throughout dry and hot seasons is known as
Answer
(A)
aestivation
45
Which of the following factors may not affect living organisms in an aquatic habitat?
Answer
(C)
Humidity
46
Which of the following parasites is a flatworm?
Answer
(D)
Schistosoma
47
During prolonged exercises, glucose in the muscle is convened to
Answer
(B)
lactic acid
48
Which of the following is an effect of carbon monoxide on man?
Answer
(B)
Reducing oxygen carrying capacity of blood
49
Which of the following is a renewable natural resources?
Answer
(A)
Air
50
Which of the following resources is competed for by organisms in the desert?
Answer
(D)
Water
51
The major types of man’s finger prints do not include
Answer
(C)
simple
52
Which of the following is an example of discontinuous variation?
Answer
(C)
Blood groups of patients
53
Which of the following statements is correct about variation?
Answer
(D)
offsprings differ from their ancestors and from each other
54
Which of the following statements about sex determination is correct? At fertility
Answer
(A)
the probability of male to female offspring is 1/2
55
The genotypic ratio of 1 : 2 : 1 in the offspring of a hybrid cross illustrates the law of
Answer
(C)
segregation