JAMB - Biology (1991)
1
Which of the following structure is associated with aerobic respiration?
2
The structure labelled 5 is used for
3
Angiosperms and gymnosperms belong to the plants group known as
4
Which of the following are non-green plants?
5
Sting cells are normally found in
6
Which of the following are differentiated into true roots, stems and leaves
7
To facilitate gaseous exchange, breathing roots have
8
The annulus of fern sporangium helps in
9
One of the features which adapts Paramecium to its environment is the possession of
10
In the earthworm, the cocoon is secreted by the
11
The function of maxillipeds in crayfish is to aid
12
The respiratory organ in the land snail is the
13
The gill raker of fishes take part in?
14
A wide pith with a ring of conducting tissue is characteristic of the root of
15
Which of the following is formed immediately after the first product of photosynthesis?
16
One of the accessory organs of the digestive system is the
17
The element common to protein carbohydrate and lipid is
18
The crown of the mammalian tooth is covered with
19
In the living cells, insufficient oxygen may cause a breakdown of glucose into?
20
Which of the following can bring about the greatest increase in the rate of transpiration?
21
After 30 minutes, the level of sugar solution in the above figure will?
22
The process by which water moves from X to Y through the semi-permeable membrane is called
23
Fibrinogen and prothrombin play important roles in the
24
Deoxygenation blood flows into the right and left lungs through the
25
Which of the following is a plant excretory product?
26
The movement of the whole organism to an external stimulus is termed
27
Which of the following vertebrae lacks a centrum?
28
The function of the epididymis in mammals is the
29
A collection of achenes formed from several carpels of a flower is
30
Vegetation propagation is described as asexual reproduction because
উত্তর(D)
there is no exchange of genetic materials
31
Epigeal germination can be found in
32
A dwarf plant can be stimulated to grow to normal height by the application of
33
The greatest contribution to genetic studies was made by
34
The exchange of genes between homologous chromosomes is called
35
When two heterozygotes mate, the dominant trait will appear in
উত্তর(C)
both the F1 and F2 generations
36
Which of the following characters is NOT sex-linked?
37
The most important factors which influence an organism's way of life in its habitat are
উত্তর(C)
temperature, water, light and predator-prey relationship
38
Organisms in an ecosystem are usually grouped according to their trophic level as
39
The above diagram represents a competitive interaction between organism in communities I and II. Which of the following statements is CORRECT?
উত্তর(B)
II was wiped out from the enviroment at the end of the experiments
40
A food web is more stable than a food chain because
উত্তর(D)
every organism has an alternative source
41
Which of the following is likely to occur in a deciduous forest during the dry season?
42
Which of these is NOT an adaptive features for arboreal life?
43
Which of the following diseases can be prevented by innoculation?
44
Sources of air pollutants are
উত্তর(C)
sulphur mines, vehicle exhausts and aerosols
45
Fertilizers are lost from the soil through
উত্তর(B)
leaching, underground seepages and run-off
