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Biology
WAEC / WASSCE 1993
Nervous, Hormonal Coordination & Sense Organs
When an axon is at rest, the concentration of ions on either side of the membrane are different. Which of the following is correct about the concentrations ions on either side of the membrane?
A
There is an excess of potassium ions inside the axon and an excess of sodium ions outside
B
The inside of the axon becomes positively charged while the outside is negatively charged
C
There is an excess of sodium ions on the inner side of the axon
D
Chloride and potassium ions begin to move across the membrane
E
Calcium ions accumulate on the inner side of the axon
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #16667)
Biology
WAEC / WASSCE 1993
Variety of Organisms & Classification of Living Things
The groups of sensory cells found on the upper surface of the tongue are called
A
ampullae
B
taste bud
C
nerve cells
D
somatic cells
E
tactile cells
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #16673)
Biology
WAEC / WASSCE 1993
Nervous, Hormonal Coordination & Sense Organs
Diagram
Solution
Which type of eye defect IS illustrated in the diagram above?
Attached Figure / Diagram
A
Hypermetropia
B
myopia
C
Cataract
D
Astigmatism
E
Glaucoma
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
The type of eye defect illustrated in the diagram above is long sightedness also known as hypermetropia: images are formed behind the retina and eyeball is too short
Source: Myschool Past Questions Archive (Record #16678)
Biology
WAEC / WASSCE 1993
Variety of Organisms & Classification of Living Things
Diagram
This defect can be corrected by the use of
Attached Figure / Diagram
A
convex lens
B
concave lens
C
cylindrical lens
D
surgical operation
E
biconcave lens
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #16680)
Biology
WAEC / WASSCE 1993
Adaptation & Evolution
Which of the following is not a courtship behaviour exhibited of animals?
A
Pairing
B
Display
C
Seasonal migration
D
Hibernation
E
Territorialism.
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #16684)
Biology
WAEC / WASSCE 1993
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Which of the following mineral salts is a trace element?
A
Zinc
B
CArbon
C
Hydrogen
D
Potassium
E
Calcium
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #16685)
Biology
WAEC / WASSCE 1993
Basic Ecological Concepts, Ecosystems & Biomes
Which of the following organisms reduces nitrates in the soil to gaseous nitrogen?
A
Euglena
B
Protozoan
C
Denitrifying bacterium
D
Parasitic mould
E
Nitrifying bacterium
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 #16687)
Biology
WAEC / WASSCE 1993
Basic Ecological Concepts, Ecosystems & Biomes
The process whereby microorganisms can convert atmospheric nitrogen into nitrogenous compound is
known as
A
nitrogen cycle
B
nitrogen fixation
C
denitrification
D
putrefaction
E
decomposition
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #16691)
Biology
WAEC / WASSCE 1993
Reproduction in Plants & Animals
Diagram
What is the function of the part labelled ll?
Attached Figure / Diagram
A
Attraction of insects
B
Secretion of nectar
C
Protection of the stigma
D
Formation of fruit wall
E
Attachment of flower to the shoot.
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #16720)
Biology
WAEC / WASSCE 1993
Basic Ecological Concepts, Ecosystems & Biomes
Which of the following best describes a marine habitat? A large body of water A
A
which has no distinctive colour or taste
B
with high concentration of salt
C
with tittle suspended materials
D
with no water weeds
E
which sustains no animal life
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #16754)
Biology
WAEC / WASSCE 1993
Basic Ecological Concepts, Ecosystems & Biomes
The following are features of Northern Guinea Savanna except
A
presence of tall trees with thick bark
B
bare soil with very few trees
C
presence of fire-resistant trees
D
abundant herbivores
E
predominance of woody trees.
medium Difficulty
Verified Correct Answer: Option E
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option E.
Source: Myschool Past Questions Archive (Record #16760)
Biology
WAEC / WASSCE 1993
Basic Ecological Concepts, Ecosystems & Biomes
Which of the following explains the term pyramid of numbers?
A
The number of organisms in a trophic level
B
The relationship between plants in different trophic levels
C
The number of saprophytes and parasites in a habitat
D
The number of predators in a habitat
E
Progressive decrease in the number of individuals from lower to higher trophic level
medium Difficulty
Verified Correct Answer: Option E
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option E.
Source: Myschool Past Questions Archive (Record #16766)
Biology
WAEC / WASSCE 1993
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
In which of the following processes is carbondioxide not given out?
A
Respiration in plants
B
Decay of organism
C
Burning of organic matter
D
Burning of fuels
E
During photosynthesis.
medium Difficulty
Verified Correct Answer: Option E
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option E.
Source: Myschool Past Questions Archive (Record #16773)
Biology
WAEC / WASSCE 1993
Basic Ecological Concepts, Ecosystems & Biomes
Sea water taken in by a living organism can be recycled into the atmosphere through all the following
processes except
A
transpiration
B
digestion
C
excretion
D
respiration
E
decay
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #16780)
Biology
WAEC / WASSCE 1993
Population Ecology, Habitats & Conservation
Which of the following water pollutant may contain organisms that cause dysentery?
A
Pesticides
B
Sewage
C
Industrial wastes
D
Fertilizers
E
Crude oil.
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #16781)