2011

JAMB Biology 2011 past questions

50 questions from the 2011 JAMB UTME Biology paper. Free, with answers where available.

Biology JAMB 2011 Q1 OK Answer: C
Which Question Paper Type of Biology as indicated above is given to you?
A
Type Green
B
Type Purple
C
Type Red
D
Type Yellow Use the diagram below to answer question 2 and 3
Biology JAMB 2011 Q2 OK Answer: C
The organelle responsible for heredity is labelled
A
l
B
ll
C
lll
D
I
Biology JAMB 2011 Q3 OK Answer: D
The part labelled IV is the
A
mitochondrion
B
cell wall
C
endoplasmic reticulum
D
nucleus
Biology JAMB 2011 Q4 OK Answer: C
Which of the following is most advanced in the evolutionary trend of animals?
A
Liver fluke
B
Earthworm
C
Snail
D
Cockroach
Biology JAMB 2011 Q5 OK Answer: D
Which of the following is the lowest category of classification?
A
Class
B
Species
C
Family UTME 2012 BIOLOGY QUESTIONS
Biology JAMB 2011 Q6 OK Answer: A
Which of the organisms represented are notable agricultural pests?
A
II and IV
B
I and IV
C
II and III
D
I and III
Biology JAMB 2011 Q7 OK Answer: B
An economic importance of the organism represented by IV is that
A
it transmits water borne disease to humans
B
it is destructive to farm crops
C
its faeces pollutes drinking water
D
it helps in the control of mosquito larvae
Biology JAMB 2011 Q8
The adult form of iii is a vector of
A
sleeping sickness
B
river blindness
C
cholera
D
elephantiasis
Biology JAMB 2011 Q9 OK Answer: A
The adaptive importance of nuptial flight from termite colonies is to
A
disperse the reproductives in order to establish new colonies
B
provide abundant food for birds and other animals during the early rains
C
ensure cross-breeding between members of one colony and another
D
expel the reproductives so as to provide enough food for other members Use the diagram below to answer question 10 and 11 [PAGE 9]
Biology JAMB 2011 Q10 OK Answer: A
The gas evolved in the process is
A
carbon (IV) oxide
B
nitrogen
C
oxygen
D
carbon (II) oxide
Biology JAMB 2011 Q11 OK Answer: C
The experimental set-up above is used to demonstrate the process of
A
diffusion
B
photosynthesis
C
fermentation
D
plasmolysis
Biology JAMB 2011 Q12 OK Answer: D
Which of the following can cause shrinkage of living cells?
A
Hypotonic solution
B
Isotonic solution
C
Deionized water
D
Hypertonic solution
Biology JAMB 2011 Q13 OK Answer: B
Which of the following is true of leucocytes?
A
they are respiratory pigments
B
they are most numerous and ramify all cells
C
they are large and nucleated
D
they are involved in blood clotting
Biology JAMB 2011 Q14 OK Answer: A
The conversion of a nutrient into a molecule in the body of a consumer is referred to as
A
digestion
B
assimilation
C
absorption
D
inhibition
Biology JAMB 2011 Q15 OK Answer: B
The ability of living organism to detect and respond to changes in the environment is referred to as
A
locomotion
B
irritability
C
growth
D
taxis
Biology JAMB 2011 Q16 OK Answer: D
In mammals, the exchange of nutrients and metabolic products occurs in the
A
lungs
B
oesophagus
C
trachea
D
lymph
Biology JAMB 2011 Q17 OK Answer: A
An example of an endospermous seed is
A
maize gain
B
cashew nut
C
cotton seed
D
been seed
Biology JAMB 2011 Q18 OK Answer: C
I. Parasitism -> Sundew. II. Autotrophism ->Amoeba. III. Saprophytism -> Alga. IV Heterotrophism -> Agama. Which of the above modes of nutrition is correctly matched with the organism that exhibits it?
A
II
B
III
C
II
D
I Use the following information to answer the questions 19 and 20. I. Test tube containing cane sugar and water. II. Test tube containing cane sugar and diluted acid. III. Test tube containing cane sugar and its degrading enzyme.
Biology JAMB 2011 Q19 OK Answer: B
In which of the test tubes will glucose be detected after complete hydrolysis?
A
I and II only
B
II and III only
C
I only
D
I, II and III
Biology JAMB 2011 Q20 OK Answer: C
The enzyme involved in the hydrolysis is
A
rennin
B
erepsin [PAGE 10]
C
sucrase
D
maltase
Biology JAMB 2011 Q21 OK Answer: A
The part of the mammalian ear responsible for the maintenance of balance is the
A
cochlea
B
pinna
C
perilymph
D
ossicles
Biology JAMB 2011 Q22 OK Answer: A
The path followed by air as it passes through the lungs in mammals is
A
trachea -> bronchi -> bronchioles -> alveoli
B
bronchi -> trachea -> alveoli -> bronchioles
C
trachea -> bronchioles ->bronchi-> alveoli
D
bronchioles -> alveoli -> bronchi ->trachea
Biology JAMB 2011 Q23 OK Answer: C
The movement response of a cockroach away from a light source can be described as
A
positive phototaxism
B
negative phototaxism
C
negative phototropism
D
positive phototropism
Biology JAMB 2011 Q24 OK Answer: A
The vascular tissues in higher plants are responsible for
A
the movement of food and water
B
suction pressure
C
transpiration pull
D
the transport of gases and water
Biology JAMB 2011 Q25 OK Answer: B
Which of the following organs regulates the levels of water, salts, hydrogen ions and urea in the mammalian blood?
A
Liver
B
Kidney
C
Bladder
D
Colon
Biology JAMB 2011 Q26 OK Answer: D
The sequence of the one-way gaseous exchange mechanism in a fish is
A
operculum -> gills -> mouth
B
gills -> operculum -> mouth
C
mouth -> operculum -> gills
D
mouth -> gills -> operculum
Biology JAMB 2011 Q27 OK Answer: D
The type of asexual reproduction that is common to both Paramecium and protists is
A
budding
B
sporulation
C
fragmentation
D
fission
Biology JAMB 2011 Q28 OK Answer: B
In nature, plants and animals are perpetually engaged in mutualism because
A
they are rivals
B
all animals rely on food produced by plants
C
they utilize respiratory wastes of each other
D
they are neighbours
Biology JAMB 2011 Q29 OK Answer: A
In an experiment to determine the percentage of humus and water in a soil sample, the following results were obtained: Weight of the evaporating basin alone = 80.5g Weight of basin and soil = 101.5g Weight after drying the soil in the oven = 99.0g Weight of basin and roasted soil = 95.5g The percentage of humus in the soil sample is
A
16.7%
B
17.6%
C
26.7%
D
16.2%
Biology JAMB 2011 Q30 OK Answer: C
An example of a filter -feeding animal is
A
shark
B
butterfly
C
whale
D
mosquito
Biology JAMB 2011 Q31 OK Answer: C
Which of the following is a feature of the population pyramid of a developing country?
A
long lifespan
B
low birth rate
C
low death rate [PAGE 11]
D
short lifespan
Biology JAMB 2011 Q32 OK Answer: C
The interaction of a community of organisms with its abiotic environment constitutes
A
niche
B
a food chain
C
an ecosystem
D
a microhabitat
Biology JAMB 2011 Q33 OK Answer: B
The vector of the malaria parasite is
A
female Aedes mosquito
B
female Anopheles mosquito
C
male Culex mosquito
D
female Culex mosquito
Biology JAMB 2011 Q34 OK Answer: C
Which of the following instruments is used to measure relative humidity?
A
Hydrometer
B
Thermometer
C
Hygrometer
D
Anemometer
Biology JAMB 2011 Q35 OK Answer: A
Exo-erythrocytic phase of the life cycle of malaria parasite occurs in the
A
liver of humans
B
reticuloendothelial cells of humans
C
Malpighian tubules of mosquito
D
brain of humans
Biology JAMB 2011 Q36 OK Answer: B
Habitats are generally classified into
A
biotic and abiotic
B
aquatic and terrestrial
C
arboreal and marine biomes
D
microhabitats and macrohabitats
Biology JAMB 2011 Q37 OK Answer: B
Dracunculiasis can be contacted through
A
eating contaminated food
B
drinking contaminated water
C
bathing in contaminated water
D
bites of blackfly
Biology JAMB 2011 Q38 OK Answer: C
Which of the following groups of environmental factors are density- dependent?
A
Food, salinity, accumulation of metabolites and light
B
Temperature, salinity predation and disease
C
Food predation, disease and accumulation of metabolites
D
Temperature food disease and light
Biology JAMB 2011 Q39 OK Answer: B
Millet, sorghum, maize and onions are common crops growth in Nigeria in the
A
tropical rainforests
B
Sudan savanna
C
montane forests
D
Sahel savanna
Biology JAMB 2011 Q40 OK Answer: B
In which of the following biomes is the south western part of Nigeria located?
A
Temperate forest
B
Tropical rainforest
C
Tropical woodland
D
Desert
Biology JAMB 2011 Q41 OK Answer: C
The inheritable characters that are determined by a gene located on the X- chromosome is
A
recessive
B
sex-linked
C
homozygous
D
dominant
Biology JAMB 2011 Q42 OK Answer: B
Lack of space in a population could lead to an increase in
A
water scarcity
B
birth rate
C
disease rate
D
drought
Biology JAMB 2011 Q43 OK Answer: A
If the cross of a red-flowered plant with a white-flowered plant produces a pink- flowered plant, it is an example of
A
codominance
B
incomplete dominance
C
mutation
D
linkage
Biology JAMB 2011 Q44 OK Answer: A
Which of the following theories was NOT considered by Darwin in his evolutionary theory?
A
Variation
B
Survival of the fittest
C
Use and disuse
D
Competition
Biology JAMB 2011 Q45 OK Answer: D
The crossing of individuals of the same species with different genetic characters is
A
cross breeding [PAGE 12]
B
polygenic inheritance
C
non-disjunction
D
inbreeding
Biology JAMB 2011 Q46 OK Answer: A
The number of alleles controlling blood groups in humans
A
3
B
4
C
5
D
2
Biology JAMB 2011 Q47 OK Answer: A
During blood transfusion, agglutination may occur as a result of the reaction between
A
contrasting antigens and antibodies
B
two different antigens
C
two different antibodies
D
similar antigens and antibodies
Biology JAMB 2011 Q48 OK Answer: A
The fallacy in Lamarck's evolutionary theory was the assumption that
A
traits are acquired through disuse of body parts
B
acquired traits are heritable
C
acquired traits are seldom formed
D
traits are acquired through the use of body parts
Biology JAMB 2011 Q49 OK Answer: D
The bright coloured eye spots on the wings of moth are an example of
A
warning colouration
B
disruptive colouration
C
crypsis
D
mimicry
Biology JAMB 2011 Q50 OK Answer: D
The wings of a bat and those of a bird are examples of
A
convergent evolution
B
continuous variation
C
coevolution
D
divergent evolution [PAGE 13]