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Biology
WAEC / WASSCE 2012
Growth, Micro-organisms & Public Health
What is the benefit of thunder and lightning to farmers?
A
Addition of nitrates to the soil
B
Aeration of the soil
C
Removal of harmful bacteria from the soil
D
Addition of rain water to the soil
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 #20339)
Biology
WAEC / WASSCE 2012
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Which of the following substances must be present in the soil for growth of a healthy green plant?
A
Amino acids
B
Carbon
C
Glucose salts
D
Magnesium ions
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 #20341)
Biology
WAEC / WASSCE 2012
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
The purpose of proteins in the diet of a mammal is to
A
promote growth and repair cells
B
break down molecules
C
regulate the flow of chyme
D
serve as co-factors or enzymes
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 #20344)
Biology
WAEC / WASSCE 2012
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Excess carbohydrates can be stored in the muscles in the form
A
cellulose
B
glycogen
C
chitin
D
lipids
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 #20346)
Biology
WAEC / WASSCE 2012
Variety of Organisms & Classification of Living Things
The bones of the legs of a six years old boy are observed to be weak and crooked. Which of the following elements
were deficient in his mother’s diet at pregnancy?
A
Sodium and iron
B
Iron and manganese
C
Calcium and phosphorus
D
Magnesium and sulphur
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 #20348)
Biology
WAEC / WASSCE 2012
Variety of Organisms & Classification of Living Things
Diagram
The diagram above is an illustration of an experimental setup to test the action of
yeast. What test would be used to confirm the nature of the gas given off at?
Attached Figure / Diagram
A
Insert a glowing splint
B
Pass the gas through lime water
C
Insert a piece of litmus paper
D
Smell the gas
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 #20351)
Biology
WAEC / WASSCE 2012
Digestive System & Feeding Mechanisms
Which of the following digestive enzymes would be greatly affected if the liver fails to
produce bile?
A
Amylase
B
Cellulase
C
Lipase
D
rotease
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 #20354)
Biology
WAEC / WASSCE 2012
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Diagram
Solution
The appropriate food to be given to the child in the picture above is?
Attached Figure / Diagram
A
beans
B
garri
C
bread
D
avocado pear
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
A good proportion should be (animal) protein, so that we may be sure of giving also enough vitamin B12, and a satisfactory mixture of amino-acids.
Protein can be found in foods like:
seafood.
eggs.
lean meat.
beans.
peas.
nuts.
seeds.
Source: Myschool Past Questions Archive (Record #20356)
Biology
WAEC / WASSCE 2012
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Which of the following food substances will have
little or no calorific value?
A
Proteins
B
Carbohydrates
C
Lipids
D
Water
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 #20357)
Biology
WAEC / WASSCE 2012
Basic Ecological Concepts, Ecosystems & Biomes
A space containing a group of interactive organisms
is called
A
community
B
habitat
C
ecosystem
D
population
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 #20359)
Biology
WAEC / WASSCE 2012
Basic Ecological Concepts, Ecosystems & Biomes
The area around the earth where life activities go on is referred to as
A
biosphere
B
lithosphere
C
habitat
D
ecosystem
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 #20364)
Biology
WAEC / WASSCE 2012
Basic Ecological Concepts, Ecosystems & Biomes
The following are abiotic components of the ecosystem except
A
bacteria
B
topography
C
water
D
wind
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 #20366)
Biology
WAEC / WASSCE 2012
Basic Ecological Concepts, Ecosystems & Biomes
Which of the following instruments would be most appropriate in comparing the air pressure at different places in the habitat?
A
Hygrometer
B
Barometer
C
Photometer
D
Air pressure disc
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 #20367)
Biology
WAEC / WASSCE 2012
Basic Ecological Concepts, Ecosystems & Biomes
Diagram
The best title for the above diagram is
Attached Figure / Diagram
A
terrestrial food web
B
terrestrial food chain
C
aquatic food web
D
aquatic food chain
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 #20368)
Biology
WAEC / WASSCE 2012
Growth, Micro-organisms & Public Health
Solution
The detection of vibro cholera in public drinking water is a sign of
A
clean water
B
outbreak of disease
C
water pollution.
D
decayed organisms in the water
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
The detection of Vibrio cholerae (the bacterium that causes cholera) in public drinking water is a direct indicator of water pollution, specifically fecal contamination. Because V. cholerae is primarily transmitted through the feces of infected individuals, its presence in a public supply signifies that the water has been contaminated by untreated sewage or human waste. While this pollution can lead to an outbreak, the presence of the organism itself is defined as a state of contamination or pollution of the water body.
Source: Myschool Past Questions Archive (Record #20374)