JAMB Biology Past Questions 2012 | Free Practice Test & Answers
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Created by: juanbacan
Which Question Paper Type of Biology as indicated above is given to you?
Type Green
Type Purple
Type Red
Type Yellow
The organelle responsible for heredity is labelled
I
II
III
IV
The part labelled IV is the
mitochondrion
cell wall
endoplasmic reticulum
nucleus
Which of the following is most advanced in the evolutionary trend of animals?
Liver fluke
Earthworm
Snail
Cockroach
Which of the following is the lowest category of classification?
Class
Species
Family
Genus
Plants that show secondary growth are usually found among the
thallophytes
pteridophytes
monocotyledons
dicotyledons
The fungi are distinct group of eukaryotes mainly because they have
spores
no chlorophyll
many fruiting bodies
sexual and sexual reproduction
An arthropod that is destructive at early stage of its life cycle is
butterfly
mosquito
bee
millipede
An animal body that can be cut along its axis in any plane to give two identical parts is said to be
radially symmetrical
bilaterally symmetrical
asymmetrical
symmetrical
Which of the following possesses mammary gland?
Dogfish
whale
shark
catfish
The feature that links birds to reptiles in evolution is the possession of
feathers
break
skeleton
scales
Countershading is an adaptive feature that enables animals to
fight enemies
remain undetected
warn enemies
attract mates
Which of the following plant structures lacks a waterproof cuticle?
leaf
stem
root
shoot
In the mammalian male reproductive system, the part that serves as a passage for both urine and semen is the
urethra
ureter
bladder
seminal vesicle
In plants which of the following is required in minute quantities for growth?
Copper
Potassium
Phosphorus
Sodium
Which of the following organisms is both parasitic and autotrophic?
Sundew
Loran thus
Rhizopus
Tapeworm
A function of the hydrochloric acid produced in the human stomach during digestion is to
neutralise the effect of bile
coagulate milk protein and emulsify fats
stop the action of ptyalin
break up food into smaller particles
Which of the following is a polysaccharide?
Glucose
Sucrose
Maltose
Cellulose
Arrows represent directional movement materials.
Transportation in the xylem is represented by
I
II
III
IV
The arrow labelled ll represents the
release of oxygen
intake of carbon (IV) oxide
movement of photosynthates
movement of nutrients
In the kidney of mammals, the site of ultrafiltration is the
uriniferous tubule
Bowman's capsule
loop of Henle
renal tubule
Which of the following is involved in secondary thickening in plants?
Collenchyma and xylem cells
Vascular cambium
Vascular cambium and cork cambium
Cork cambium and sclerenchyma
An example of a fruit that develops from a single carpel is
okro
tomato
bean
orange
The developing embryo is usually contained in the part labelled
IV
III
II
I
The function of the part labelled lll is to
produce egg cells
protect sperms during fertilization
secrete hormones during coitus
protect the developing embryo
Plant growth can be artificially stimulated by the addition of
gibberellin
kinin
abscisic acid
ethylene
The autonomic nervous system consists of neurons that control the
voluntary muscles
heart beat
tongue
hands
Plants of temperate origin can be grown in tropical areas in the vegetation zones of the
rain forest
Guinea savanna
Sudan savanna
montane forest
The water cycle is maintained mainly by
evaporation of water in the environment
evaporation and condensation of water in the environment
condensation of water in the environment
transpiration and respiration in plants
Organisms living in an estuarine habitat are adapted to
withstand wide fluctuations in temperature
survive only in water with low salinity
withstand wide fluctuations in salinity
feed only on phytoplankton and dead organic matter
The presence of stilt roots, pneumatophores, sunken stomata and salt glands are adaptive features of plants found in the
tropical rainforest
mangrove swamps
grassland
montane forest
Which of the following animals can exist solely on the water they get from food and metabolic reactions?
forest arboreal dweller
Desert dwellers
forest-ground dweller
rainforest dwellers
The most likely first colonizers of a bare rock are
mosses
ferns
lichen
fungi
The carrying capacity of a habitat is reached when the population growth begins to
increase slowly
increase exponentially
slow down
remain steady
The abiotic factors that control human population include
disease and famine
space and rainfall
flooding and earthquake
temperature and disease
An indigenous method of renewing and maintaining soil fertility is by
clearing farms by burning
planting one crop type
adding inorganic fertilizers yearly
crop rotation and shifting cultivation
The diseases caused by water-borne pathogens include
gonorrhoea and poliomyelitis
typhoid and syphilis
tuberculosis and cholera
typhoid and cholera
The graph illustrates
the highest frequency for height of 2 metres
a discontinuously varying character
a continuously varying character
total yield in a cassava farm
The largest number of cassava plants has an approximate height of
1.4m
1.6m
1.8m
2.0m
Which of the following is true in blood transfusion?
person of blood group AB can donate blood only to another person of blood group AB
persons of blood groups A and B can donate or receive blood from each other
A person of blood group AB can receive blood only from persons of blood group A or B
A person of blood group O can donate only to a person of blood group O
A yellow maize is planted and all the fruits obtained are of yellow seeds. When they are cross-bred, yellow seeds and white seeds are obtained in a ratio 3:1. The yellow seed is said to be
non-heritable
sex-linked
a recessive trait
a dominant trait
When a colour-blind man marries a carrier woman. What is the probability of their offspring being colour blind?
25%
50%
75%
100%
The correct base pairing for DNA is
adenine → thymine and guanine → cytosine
adenine → guanine and thymine → cytosine
adenine → cytosine and guanine → thymine
adenine → adenine and cytosine → cytosine
The type of interaction shown is referred to as
interspecific competition
intraspecific competition
mutualism
cooperation
Which of the following statement is true of the interaction?
P aurelia is better adapted for obtaining food than P caudatum
P caudatum is better adapted for obtaining food than P. aurelia
both organisms cannot coexist
both organisms cannot reproduce
The short thick break in birds is an adaptation for
crushing seeds
sucking nectar
tearing flash
straining mud
The basking of Agama lizards in the sun is to
change the colour of their body
raise their body temperature to become active
fight to defend their territories
attract the female for courtship
The significance of a very large number of termites involved in nuptial swarming is to
provide birds with plenty of food
ensure their perpetuation despite predatory pressure
search for a favourable place to breed
ensure that every individual gets a mate
The use and disuse of body parts and the inheritance of acquired traits were used to explain
Darwin's theory
Lamarek's theory
genetic drift
gene flow
From his study of Galapagos finches, Darwin derived his theory of evolution from
comparative anatomy
comparative physiology
fossil remains
comparative embryology
