Question Library
Browse, filter, and study verified past examination questions with step-by-step mathematical reasoning.
Searching 18,000+ Questions...
Sifting topics, KaTeX formulas & verified solutions
Showing 3106–3120 of 13612 verified questions
Sort by:
Biology
WAEC / WASSCE 2018
Basic Ecological Concepts, Ecosystems & Biomes
Solution
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
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
Capillarity in soil refers to the ability of a soil to allow and retain water in it. Clayey soil has the highest tendency to hold water hence, the water would rise highest in it.
Source: Myschool Past Questions Archive (Record #48463)
Biology
WAEC / WASSCE 2018
Basic Ecological Concepts, Ecosystems & Biomes
Solution
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
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
The competition in a territory is the factor that basically determines whether or not a specie will survive or not in that territory. Ecological niche is the total package of the habits of a specie. The competition for food and water is the most important influencer of the ecological niche.
Source: Myschool Past Questions Archive (Record #48464)
Biology
WAEC / WASSCE 2018
Variety of Organisms & Classification of Living Things
Diagram
Solution
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
A
light energy
B
low humidity
C
oxygen
D
nitrate
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
Proper light in the aquarium serves as a form of energy for the photosynthetic plants and animals, hence is very important.
Source: Myschool Past Questions Archive (Record #48465)
Biology
WAEC / WASSCE 2018
Basic Ecological Concepts, Ecosystems & Biomes
Solution
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
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
The secchi disc is used to check for the transparency and the turbidity of water.
Source: Myschool Past Questions Archive (Record #48466)
Biology
WAEC / WASSCE 2018
Population Ecology, Habitats & Conservation
Solution
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
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
Wildlife conservation is necessary for the prevention of the extinction of wildlife. It helps with the preservation of these wild animals.
Source: Myschool Past Questions Archive (Record #48476)
Biology
WAEC / WASSCE 2018
Variation & Genetics (Heredity)
Solution
Patients X and Y were likely transferred with blood of genotype
A
OO
B
AO
C
BO
D
AA
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
The blood types A and AB can receive blood from blood types A and O but not B. Hence, if there was a problem after transfusion, it was most likely to be from BO.
Source: Myschool Past Questions Archive (Record #48488)
Biology
WAEC / WASSCE 2018
Growth, Micro-organisms & Public Health
Solution
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
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
The basic technique in identification of the antigens and antibodies of blood groups is the agglutination test and can be done to prevent the clumping of the red blood cell. The symptom is due to clumping due to incompatible blood transfusion.
Source: Myschool Past Questions Archive (Record #48494)
Biology
WAEC / WASSCE 2018
Variation & Genetics (Heredity)
Solution
The greatest contribution to genetic studies was made by
A
Gregor Mendel
B
Thomas Morgan
C
Charles Darwin
D
Robert Hooke
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
Gregor Mendel is considered as the founder of modern science of genetics.
Source: Myschool Past Questions Archive (Record #48495)
Biology
WAEC / WASSCE 2018
Variation & Genetics (Heredity)
Solution
The exchange of genes between homologous chromosomes is called
A
crossing over
B
back cross
C
test cross
D
mutation
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
Crossing over is the process where homologous chromosomes pair up with each other and exchange different segments of genetic material to form recombinant chromosomes.
Source: Myschool Past Questions Archive (Record #48496)
Biology
WAEC / WASSCE 2018
Adaptation & Evolution
Diagram
Solution
The theory supports
Attached Figure / Diagram
A
natural selection
B
struggle for survival
C
independent assortment
D
the use and disuse of body parts
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
The theory implies that the more you use a part of your body, with time that part of your body starts adjusting in order to make the work easy.
Source: Myschool Past Questions Archive (Record #48515)
Biology
WAEC / WASSCE 2018
Variety of Organisms & Classification of Living Things
Solution
In evolution, fossils are naturally preserved in
A
rocks
B
water
C
chemicals
D
trees
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
Some sedimentary rocks actually have fossils stored in them. Therefore, fossils are stored in rocks.
Source: Myschool Past Questions Archive (Record #48516)
Biology
WAEC / WASSCE 2018
Adaptation & Evolution
Solution
Which of the following is not a social insect?
A
termite
B
housefly
C
honeybee
D
ant
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
Social insects are characterized by Group integration (blending the new members into the already existing social structure), Division of labour and Overlap of generations (having several breeding seasons, hence having multiple generations present at a time).
Source: Myschool Past Questions Archive (Record #48520)
Biology
WAEC / WASSCE 2018
Variation & Genetics (Heredity)
Diagram
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
A
P
B
Q
C
S
D
R
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #48500)
Biology
WAEC / WASSCE 2018
Variation & Genetics (Heredity)
Solution
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
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
Linked genes are genes that are found near each other on the same chromosome.
Source: Myschool Past Questions Archive (Record #48502)
Biology
WAEC / WASSCE 2018
Variation & Genetics (Heredity)
Solution
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
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
Mitosis is a process of cell reproduction in which one cell gives rise to two genetically identical daughter cells of the same number. Hence, the daughter cell has the same number as the parent cell prior to the process.
Source: Myschool Past Questions Archive (Record #48504)