WAEC - Biology (1997)

1
Which of the following organism possesses both plant and animal characteristics?
Answer
(C)
Euglene
2
The structure represented in the diagram above is
Answer
(C)
a filament
3
The part labelled I in the diagram is the
Answer
(B)
chloroplast
4
What is the function of the part labelled II in the diagram? It
Answer
(D)
suspends the nucleus
5
Which of the following organelles helps to remove excess water
from cells?
Answer
(C)
Contractile vacuole
6
Which of the following processes occurs by diffusion?
Answer
(D)
Exchange of nutrients between a mother and the foetus
7
Which of the following is a product of brewing when yeast is used as a fermenting agent?
Answer
(D)
Ethanol
8
Which of the following hind limb bones is equivalent to the humerus of the forelimb?
Answer
(E)
Femur
9
Clotting of blood is a function of
Answer
(B)
vitamin K
10
Which of the following structures is associated with respiration in insects?
Answer
(B)
Spiracle
11
Which of the labelled parts is made up of dead cells?
Answer
(D)
II and III
12
The part labelled I in the diagram is called
Answer
(C)
Ienticel
13
The malpighian tubule plays a major role in
Answer
(E)
excretion
14
Filtered blood from the kidney is carried back to the circulatory system
through the
Answer
(C)
renal vein
15
The early removal of the pituary gland in animals may cause
Answer
(A)
ceasation of growth
16
A high concentration of auxin in the root will
Answer
(A)
inhibit growth
17
The part labelled II in the diagram is the
Answer
(B)
grey matter
18
Which of the labelled parts is filled with cerebrospinal fluid?
Answer
(E)
I only
19
Which of the following is an example of a reflex action?
Answer
(A)
Sneezing
20
During mating, the male toad holds the female with its?
Answer
(D)
nuptial pad
21

The diagram above represents a?

Answer
(E)
germinating pollen grain
22
The part labelled I in the diagram is the
Answer
(D)
endosperm
23
Which of the following fruits is a schizocarp?
Answer
(B)
Desmodium
24
Which of the following is not a characteristic of wind dispersed fruits and seeds?
Answer
(D)
Stickyjuice
25
Which of the following structures transports water from the roots to the leaves?
Answer
(D)
Xylem
26

The eye defect represented in the diagram is?

Answer
(A)
myopia
27

 

The above defect is corrected by using a?

Answer
(A)
concave lens
28
Which of the following organisms is viviparous?
Answer
(C)
Sheep
29
The reduction of nitrates to gaseous nitrogen is
Answer
(E)
denitrification
30
The association between protozoa and termites is an example of
Answer
(A)
symbiosis
31
Flatworms are classified as
Answer
(A)
Platyhelminthes
32
The essential parts of a flower are
Answer
(D)
androecium and gynoecium
33
Which of the following parts of the tooth is first damaged during dental decay?
Answer
(B)
Enamel
34
The set- up above is used to demonstrate
Answer
(D)
fermentation
35
What will be the colour of the solution in the test tube labelled II at
the end of the experiment?
Answer
(C)
Milky
36
Which gas will pass into the test tube labelled II from I?
Answer
(B)
Carbon dioxide
37
In which of these forms is carbohydrate stored in yam?
Answer
(C)
Starch
38
Northern Guinea savanna is associated with
Answer
(D)
abundant grasses
39
Which of the following activities is not necessary in population sampling?
Answer
(E)
Feeding the organisms
40
Which of the following is an abiotic factor?
Answer
(B)
Rainfall
41
The maximum and minimum thermometer is used to measure
Answer
(B)
highest and lowest temperature of the day
42
Which of the following organisms will have the highest biomass?
Answer
(D)
Phytoplankton
43
Which of the following is the correct sequence for energy transfer and nutrient cycling among living things
in an ecosystem?
Answer
(D)
Producers β†’ consumers β†’ decomposers
44
Which of the following factors does not affect the distribution of organisms in an aquatic habitat?
Answer
(C)
Humidity
45
A habitat with low rainfall, very low humidity, exposed soil with little plant cover, few trees and shrubs is
likely to be
Answer
(C)
a desert
46
Which of the following factors may not cause over-crowding?
Answer
(C)
Reduced birth rate
47
Crops grown mainly to feed animals are called
Answer
(A)
forage crops
48
The farming practice by which an exhausted farm land is left for a number of years before cultivation is
known as
Answer
(D)
bush fallowing
49
In palm-wine, yeast acts as a
Answer
(D)
catalyst
50
Which of the following farm practices can cause loss of soil fertility?
Answer
(E)
intensive cropping
51
One of the use of variation is in
Answer
(B)
determining paternity
52
In which of the underlisted blood groupings is agglutination likely to occur during transfusion?
Answer
(D)
IV
53
Which of the following is not a morphological variation
Answer
(E)
Tongue rolling
54
In man haemophilia is recessive and sex linked, The

probability of carrier mother and a normal father having a haemophilic male is
Answer
(B)
1/8
55
In which of the following is the knowledge of genetics not applicable?
Answer
(B)
Preservation of seeds