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Biology WAEC / WASSCE 2018 Basic Ecological Concepts, Ecosystems & Biomes
Which of the following statements would be a correct observation at the end of the experiment? Water moves
A
highest in sandy soil
B
lowest in loamy soil
C
to the same level in all soil types
D
highest in clayey soil
medium Difficulty
Biology WAEC / WASSCE 2018 Basic Ecological Concepts, Ecosystems & Biomes
The most important factor(s) that influence(s) the ecological niche of an organism is/ are the
A
water, light and predator-prey relationship
B
food and water availability
C
physical environment
D
competition for food and space
medium Difficulty
Biology WAEC / WASSCE 2018 Variety of Organisms & Classification of Living Things
The diagram above is an illustration of organisms in an air-tight aquarium.The most important factor needed by the organisms is
Attached Figure / Diagram
Question diagram
A
light energy
B
low humidity
C
oxygen
D
nitrate
medium Difficulty
Biology WAEC / WASSCE 2018 Basic Ecological Concepts, Ecosystems & Biomes
Which of the following instruments is used to determine the turbidity of water?
A
hygrometer
B
hydrometer
C
secchi disc
D
rain gauge
medium Difficulty
Biology WAEC / WASSCE 2018 Population Ecology, Habitats & Conservation
Conservation of wildlife is necessary mainly because
A
wild species cannot resist disease better than their domesticated species
B
many predator wild animals help in the control of pests
C
it prevents extinction of species
D
many people derive pleasure from observing wild animals
medium Difficulty
Biology WAEC / WASSCE 2018 Variation & Genetics (Heredity)
Patients X and Y were likely transferred with blood of genotype
A
OO
B
AO
C
BO
D
AA
medium Difficulty
Biology WAEC / WASSCE 2018 Growth, Micro-organisms & Public Health
What should the hospital have done to prevent X from showing the symptom described above? Patient X should have
A
undergone an agglutination test
B
been asked for the blood group
C
been screened for HIV
D
undergone malaria test
medium Difficulty
Biology WAEC / WASSCE 2018 Variation & Genetics (Heredity)
The greatest contribution to genetic studies was made by
A
Gregor Mendel
B
Thomas Morgan
C
Charles Darwin
D
Robert Hooke
medium Difficulty
Biology WAEC / WASSCE 2018 Variation & Genetics (Heredity)
The exchange of genes between homologous chromosomes is called
A
crossing over
B
back cross
C
test cross
D
mutation
medium Difficulty
Biology WAEC / WASSCE 2018 Adaptation & Evolution
The theory supports
Attached Figure / Diagram
Question diagram
A
natural selection
B
struggle for survival
C
independent assortment
D
the use and disuse of body parts
medium Difficulty
Biology WAEC / WASSCE 2018 Variety of Organisms & Classification of Living Things
In evolution, fossils are naturally preserved in
A
rocks
B
water
C
chemicals
D
trees
medium Difficulty
Biology WAEC / WASSCE 2018 Adaptation & Evolution
Which of the following is not a social insect?
A
termite
B
housefly
C
honeybee
D
ant
medium Difficulty
Biology WAEC / WASSCE 2018 Variation & Genetics (Heredity)
The diagrams above are illustrations of the inheritance of coat colour in mice. J, K, L, M and N are parents. The cross between two parent mice gave rise to offspring P, Q, R and S. Which of the offspring are all homozygous?
Attached Figure / Diagram
Question diagram
A
P
B
Q
C
S
D
R
medium Difficulty
Biology WAEC / WASSCE 2018 Variation & Genetics (Heredity)
Genes that remain linked are those
A
close to each other on the chromosomes
B
on the same locus on the chromosomes
C
on the homologous chromosomes
D
which are allelic pair
medium Difficulty
Biology WAEC / WASSCE 2018 Variation & Genetics (Heredity)
A plant cell has 14 chromosomes prior to mitosis. What is the number of chromosomes in the daughter cells?
A
14
B
56
C
28
D
7
medium Difficulty
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