1991

JAMB Biology 1991 past questions

36 questions from the 1991 JAMB UTME Biology paper. Free, with answers where available.

Practice with CBT mock -> All Biology years
Biology JAMB 1991 Q1
The organelle involved in tissue respiration is the
A
endoplasmic reticulum
B
ribosome
C
golgi body
D
mitochondrion.
Biology JAMB 1991 Q3
Which of the following correctly summarizes the life cycle of a fern plant?
A
Spore prothallus thalluss porangium.
B
Male and female gamentangia zygospore sporangium spores.
C
Spore thallus spermatozoa + ovumsporangium
D
Prothallus spermatozoid + egg cell leafy plant sporangium spore.
Biology JAMB 1991 Q11
The function of maxillipeds in crayfish is to aid
A
walking
B
swimming
C
feeding
D
respiration.
Biology JAMB 1991 Q12
The respiratory organ in the land snail is the
A
radula B,. mantle
C
tentacle
D
foot. Use the figure below to answer questions 13 and 14.
Biology JAMB 1991 Q13
The structure labelled 4 is for
A
feeding
B
attachment
C
excretion
D
respiration.
Biology JAMB 1991 Q14
As the tadpoles develops, the structure labelled 5
A
grows longer
B
becomes shorter
C
becomes the hind legs
D
remains unchanged.
Biology JAMB 1991 Q15
The gill rakers of fishes take part in
A
feeding
B
respiration
C
swimming
D
diffusion.
Biology JAMB 1991 Q17
Which of the following is formed immediately after the first product of photosynthesis?
A
Lipid
B
Starch
C
Oxygen
D
Sugar [PAGE 22] Use the figure below to answer questions 18 and 19. Dissection showing the Abdominal Cavity of a rat
Biology JAMB 1991 Q20
One of the accessory organs of the digestive system is the
A
kidney
B
spleen
C
liver
D
lung.
Biology JAMB 1991 Q21
The element common to protein, carbohydrate and lipid is
A
hydrogen
B
sulphur
C
nitrogen D phosphorus.
Biology JAMB 1991 Q22
The crown of the mammalian tooth is covered with
A
cement
B
dentine
C
caries
D
enamel.
Biology JAMB 1991 Q23
In living cells, insufficient oxygen may cause a breakdown of glucose into
A
fatty acids
B
lactic acids
C
glycogen
D
carbondioxide.
Biology JAMB 1991 Q24
Which of the following can bring about the greatest increase in the rate of transpiration?
A
Increased humidity
B
Reduced temperature
C
Reduced wind speed
D
Reduced humidity. Use the figure below to answer questions 25 and 26.
Biology JAMB 1991 Q25
After 30 minutes, the level of sugar solution the above figure will
A
rise in X only
B
rise in Y only
C
be the same in X and Y
D
fall in Y.
Biology JAMB 1991 Q26
The process by which water moves from X to Y through the semi-permeable membrane is called
A
diffusion
B
osmosis
C
active diffusion
D
osmoregulation.
Biology JAMB 1991 Q27
Fibriongen and prothrombin play important roles in the
A
deamination of proteins
B
clotting of blood
C
detoxication of substances
D
storage of vitamins.
Biology JAMB 1991 Q28
Deoxygenated blood flows into the right and left lungs through the
A
pulmonary vein
B
vena cava
C
pulmonary artery
D
subclavian vein .
Biology JAMB 1991 Q29
Which of the following is a plant excretory product?
A
Oil
B
Cytokinin
C
Resin
D
Amino acids.
Biology JAMB 1991 Q30
The movement of the whole organism to an external stimulus is termed
A
tropism
B
a taxis
C
a nastic movement
D
a phototrophic movement.
Biology JAMB 1991 Q31
Which of the following vertebrate lays a centrum?
A
Atlas
B
Axis
C
Thoracic
D
Lumbar
Biology JAMB 1991 Q32
The function of the epididymis in mammals is the
A
expulsion of urine
B
storage of sperms
C
circulation of blood
D
activation of sperms.
Biology JAMB 1991 Q34
Vegetative propagation is described as asexual reproduction because
A
reproductive organs are not involved
B
new individuals are not formed
C
many new plants are produced
D
there is no exchange of genetic materials.
Biology JAMB 1991 Q35
Epigeal germination can be found in
A
sorghum
B
maize
C
millet
D
groundnut.
Biology JAMB 1991 Q37
The greatest contribution to genetic studies was made by
A
Thomas Morgan
B
Gregor Mendel
C
Charles Darwin
D
Robert Hooke.
Biology JAMB 1991 Q38
The exchange of genes between homologous chromosomes is called
A
test cross
B
back cross
C
crossing -over
D
mutation.
Biology JAMB 1991 Q39
When two heterozygotes mate, the dominant trait will appear in
A
the F1 generation only
B
the F2 generation only
C
both the F1 and F2 generations
D
neither the F1 nor F2 generation.
Biology JAMB 1991 Q40
Which of the following characters is NOT sex-linked?
A
River blindness
B
Baldness.
C
Haemophilia
D
Colour Blindness [PAGE 23]
Biology JAMB 1991 Q41
The most important factors which influence an organism's way of life in its habitat are
A
the physical and biotic environment
B
food and water availability
C
temperature, water, light and predator- prey relationship
D
competition for food and space.
Biology JAMB 1991 Q42
Organisms in an ecosystem are usually grouped according to their tropic level as
A
carnivores and epiphytes
B
consumers and parasites
C
producers and consumers
D
producers and saprophytes.
Biology JAMB 1991 Q43
The above diagram represents a competitive interaction between organisms in communities I and II. Which of the following statement is CORRECT?
A
The population of I was higher than II at the beginning of the experiment.
B
II was wiped out from the environment at the end of the experiment.
C
The population of II was always lower than that of I
D
The population of I was lower at the end of the experiment than at the beginning.
Biology JAMB 1991 Q45
Which of the following is likely to occur in a deciduous forest during the dry season?
A
New leaves are formed B . The trees die off.
C
The undergrowth increases
D
The ground becomes bare.
Biology JAMB 1991 Q46
Which of these is NOT an adaptive feature for arboreal life?
A
Possession of a long tail
B
Possession of claws
C
Possession of teeth
D
Counter shading in coat colour.
Biology JAMB 1991 Q47
Which of the following diseases can be prevented by innoculation?
A
Symphilis
B
Malaria fever
C
Tuberculosis
D
Acquired immuned Deficiency Syndrome.
Biology JAMB 1991 Q48
Sources of air pollutants are
A
industrial chimneys, burning fossil oils and river dams
B
sulphur dioxide, acid rain and pesticides
C
sulphur mines, vehicle exhausts and aerosols
D
sewage, smoke and old vehicles.
Biology JAMB 1991 Q49
Fertilizers are lost from the soil through
A
sheet erosion and evaporation
B
leaching, underground seepages and run-off
C
sheet erosion, gully erosion and wind erosion
D
wind erosion and heavy rainfall.
Biology JAMB 1991 Q50
Nitrogen -fixing micro-organisms in leguminous plants live symbiotically in the
A
root nodules
B
tap roots
C
branch roots
D
root hairs. Biology 1992