Sign In

WAEC - Biology (1995)

1
At what level of organisation is Amoeba?
Answer
(C)
Cellular
2
Which of these could be regarded as an advantage of complexity in higher organisms?
Answer
(D)
Cellular differentiation leads to internal structural specialization
3
Which of the following organisms is one-celled and free-living?
Answer
(D)
Chlamydomonas
4
One of the differences between plant and animal cells is that in plants
Answer
(E)
carbohydrates are stored as starch, but as glycogen in animals.
5
Carbondioxide enters the stomata during photosynthesis through the process known as
Answer
(C)
diffusion
6
Which of the following groups carry out similar functions in living things?
Answer
(B)
Sclerenchyma, cartilage and chitin
7
Which of the following statements is correct?
Answer
(C)
triceps muscle originated at the scapula and head of the humerus
8
Which of the following pairs of tissues is responsible for strengthening the plant?
Answer
(C)
Collenchyma and Sclerenchyma
9
Which of the following is not a tissue found in plants?
Answer
(D)
Dermis
10
Higher organisms use a transport system and not diffusion only to distribute nutrients because
Answer
(A)
the ratio of their surface area to volume is small
11
In complex food relationships in a community, the primary, secondary and tertiary consumers are referred
to as
Answer
(C)
heterotrophs
12
The cell membrane of a cell is said to be semi-permeable because
Answer
(D)
it is actively selective in allowing substances pass through it
13
The function of the part labelled I is
Answer
(B)
trapping solar energy
14
The part labelled ll is the
Answer
(A)
stoma
15
The structure that will be stained blue-black by iodine is labelled
Answer
(A)
I
16
In the anaerobic stage of respiration, the net ATP molecules produced per
glucose molecule
Answer
(B)
two
17
Reabsorption of the metabolic products along the kidney tubules is made possible by the
Answer
(D)
presence of network of capillaries around the convoluted tubules
18
Hormones are transported around the mammalian body by
Answer
(C)
blood
19
Which of the following is not a function of insulin?
Answer
(E)
Stimulates muscles to oxidize glucose.
20
Which of the following is the correct route of transmission of impulses along a reflex arc?
Answer
(A)
Receptor → sensory neurone → synapse → intermediate neurone → synapse → motor neurone → effector
21
Which of the following statements is false?
Answer
(C)
Taste buds and olfactory cells are active when wet as well as when dry
22
The following are directly involved in transmission of sound waves to the brain except
Answer
(D)
eustachian tube
23
The term syncarpous is used to describe a flower when the carpels are
Answer
(A)
many and fused
24
Which of the following structures are characteristics of insect pollinated flowers?
Answer
(C)
Brightly coloured petals, scent nectar
25
Which of the following statements is not correct?
Answer
(E)
Territorial defence encourages food scarcity in a habitat
26
Which of the following is an advantage of dispersal of fruits and seeds? It allows
Answer
(C)
even distribution of plants and reduction of intraspecific competition
27
The series of changes that occur in a seed by which the embryo develops into a seedling is known as
Answer
(D)
germination
28
Which of the following organisms has a symbiotic relationship with green algae?
Answer
(C)
Hydra
29
At the end of photosynthesis, the green leaf is tested for starch and not glucose, because
Answer
(B)
the glucose formed is immediately converted to starch
30
Which of these processes removes carbon from the atmosphere?
Answer
(C)
Photosynthesis
31
Which of the following conditions is not necessary for photosynthesis to occur in plants?
Answer
(B)
There must be xylem tissue used to conduct water
32
The distribution of organisms in a fresh - water habitat like a stream or pond is determined by the following
except
Answer
(C)
pH of soil
33
Which of the following is characteristics of a swamp?
Answer
(C)
The ground is flooded most of the time
34
Very low annual rainfall, sparse vegetation, high day temperatures and cold nights are the characteristics
of the biome known as
Answer
(E)
desert
35
Which of the following conclusions
cannot be drawn from the graphs?
Answer
(E)
The quantity of ions absorbed is inversely proportional to the quantity of carbohydrate (sugar) synthesized.
36

The graphs above show the results of experiments which investigated the effect of temperature and oxygen on the rate of uptake of certain ions labelled X and Y by a plant root. Use them to answer the question

Which of the temperature ranges will likely favour the plant best?

Answer
(D)
45 - 50oC
37
Which of the following is the correct chain for the organism found in an aquatic community?
Answer
(D)
Phytoplankton, Paramecium, Waterflea, Prawn, Tilapia, Shark
38
In a food chain the position occupied by an organism is called
Answer
(A)
the trophic level
39
Which of these statements about food chain is not correct?
Answer
(C)
All organisms in a food chain are animals
40
Which of these is not applicable to the circulation of water- in nature?
Answer
(A)
Water removed from oceans are Permanently lost
41
An association between two organisms in which both benefit is called
Answer
(C)
symbiosis
42
Which of the following is not an outcome of ecological succession?
Answer
(A)
There is a progressive change in species structure, organic matter and energy flow
43
Which of the following is not an effect of over-crowding on a population?
Answer
(C)
Commensalism
44

The diagram above represent the shape of major group of bacteria
The groups staphylococci and streptobacilli are represented by

Answer
(D)
IV and VII
45
Prevention of erosion could best be carried out by
Answer
(B)
contouring of slopping ground and afforestation
46
The following are useful measures for conserving forest except
Answer
(B)
encouraging the use of charcoal for industrial and domestic purposes
47
The following practices are aimed at soil conservation except
Answer
(D)
bush clearing
48
Which of the following natural resources is most readily available to all organisms?
Answer
(D)
Air
49
Which of the following is an example of discontinuous variation?
Answer
(C)
Blood group
50
Hereditary variation is best described as
Answer
(A)
characters transmitted from generation to generation
51
An individual with blood group AB can receive blood from those in blood group(s)
Answer
(E)
A, B, AB and O
52
The statement that the environment determines which organisms survives to reproduce
Answer
(C)
supports the idea of survival of the fittest
53
Which of the following is a definition of heredity? It is the
Answer
(D)
transfer of characteristics from parents to offspring
54
Which of the following is not a reason why an offspring looks different from its parents?
Answer
(D)
Mutation which gives rise to new combination of gene
55
The pair of genes expressed in a heterozygous individual is described as
Answer
(C)
dominant gene