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Biology
WAEC / WASSCE 2008
Nervous, Hormonal Coordination & Sense Organs
Solution
The passage of nerve impulse across a synapse is facilitated by the secretion of
A
acetylcholine
B
thyroxin
C
insulin
D
progesterone
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
Yes, the passage of a nerve impulse across a synapse is facilitated by the secretion of acetylcholine, which acts as a neurotransmitter. When a nerve impulse reaches the end of a presynaptic neuron, acetylcholine is released into the synaptic cleft, where it binds to receptors on the postsynaptic neuron and triggers a response.
Source: Myschool Past Questions Archive (Record #21375)
Biology
WAEC / WASSCE 2008
Nervous, Hormonal Coordination & Sense Organs
The part of the brain which controls and coordinates body posture is the
A
cerebellum
B
hypothalamus
C
medulla oblongata
D
pons varolii
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 #21376)
Biology
WAEC / WASSCE 2008
Transport System in Plants & Animals
A pupil accidentally "watered" a potted plant with concentrated salt solution after sometime the plant began to wilt.
The wilting of the plant is due to the fact that
A
the root hair die off and can no longer absorb water
B
the salt solution causes faster rate of transpiration leading to the death of the plant cell
C
the salt solution has caused water lost from the plant cell leading to loss of turgor
D
the plant tissue has been poisoned by the salt which is absorbed by the plant
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 #21362)
Biology
WAEC / WASSCE 2008
Nervous, Hormonal Coordination & Sense Organs
Solution
A pupil accidentally "watered" a potted plant with a concentrated salt solution. After sometime the plant began to wilt.
Which of the following activities would revive the plant?
A
Covering the plant with dark paper to prevent further water loss from its surfaces
B
Leaving the plant to adapt to the condition
C
Exposing the plant to higher concentration of oxygen
D
Adding more water to the soil
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
If a plant is dehydrated, it can wilt and become unable to perform vital functions such as photosynthesis. To revive the plant, it is important to add more water to the soil as it will replenish the water supply for the plant, allowing it to recover and continue performing its functions.
Source: Myschool Past Questions Archive (Record #21363)
Biology
WAEC / WASSCE 2008
Variety of Organisms & Classification of Living Things
Primary growth in plants is brought about by the activity of the
A
meristem
B
endodermis
C
epidermis
D
mesophyll
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 #21364)
Biology
WAEC / WASSCE 2008
Supporting Tissues & Skeletal System
Diagram
To form a ball and socket joint, the structure labeled I fits into another structure in the scapula
called the
Attached Figure / Diagram
A
blade
B
glenoid cavity
C
olecranon fossa
D
patella
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 #21365)
Biology
WAEC / WASSCE 2008
Supporting Tissues & Skeletal System
Diagram
Solution
The structure labelled II is called
Attached Figure / Diagram
A
deltoid ridge
B
trochanter
C
shaft
D
trochlea
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
The diagram is that of the Femur bone. The part labelled II is the shaft.
(See diagram above)
Source: Myschool Past Questions Archive (Record #21366)
Biology
WAEC / WASSCE 2008
Variety of Organisms & Classification of Living Things
Which of the following processes is not an example of a reflex ac ion?
A
Blinking of the eye
B
Reading
C
Beating of the heart
D
Sneezing
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 #21377)
Biology
WAEC / WASSCE 2008
Nervous, Hormonal Coordination & Sense Organs
The eyes can properly focus images of objects of various distances on the retina by a process called
A
refraction
B
reflection
C
accommodation
D
correction
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 #21378)
Biology
WAEC / WASSCE 2008
Reproduction in Plants & Animals
The process by which flowers produce fruit without the process of fertilization is called
A
viviparity
B
parthenocarpy
C
propagation
D
metamorphosis
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 #21379)
Biology
WAEC / WASSCE 2008
Variety of Organisms & Classification of Living Things
Solution
The part of the young root that pushes its way through the soil is the
A
root hair
B
tap root
C
root cap
D
lateral root.
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
The part of a young root that pushes through the soil is the root cap, a protective layer of cells at the tip of the root.
The root cap acts as a "hard hat" or protective shield, allowing the root to penetrate the soil without being damaged by friction or sharp particles.
Source: Myschool Past Questions Archive (Record #21380)
Biology
WAEC / WASSCE 2008
Variety of Organisms & Classification of Living Things
An example of a dehiscent fruit is
A
crotolaria
B
tomato
C
mango
D
orange
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 #21381)
Biology
WAEC / WASSCE 2008
Variety of Organisms & Classification of Living Things
Which of the following food substances gives the least amount of calories?
A
Rice
B
Groundnuts
C
cabbage
D
Egg yolk
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 #21382)
Biology
WAEC / WASSCE 2008
Variety of Organisms & Classification of Living Things
Analysis of the gut content of an animal showed that it contained small pieces of bone, seeds. roughages and insects. The animal is likely to be a/an.
A
carnivore
B
herbivore
C
insectivore
D
omnivore
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 #21383)
Biology
WAEC / WASSCE 2008
Variety of Organisms & Classification of Living Things
Filaments of Spirogyra placed in a beaker of water in a dark cupboard died because
A
the filaments could not photosynthesize
B
conjugation could not take place
C
the temperature was too high
D
the plant was overflooded
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 #21384)