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Biology
WAEC / WASSCE 2010
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
In testing for starch in a leaf, the leaf is first boiled in water for about a minute so that the
A
cell walls are hardened
B
cells are killed
C
chlorophyll is dissolved out
D
iodine will penetrate
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 #21510)
Biology
WAEC / WASSCE 2010
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Solution
Which of the following food substances is incorrectly linked to its enzyme?
A
Protein - trypsin
B
Fat - lipase
C
Sucrose - pepsin
D
Starch - amylase
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
All the enzymes are rightly matched to the class of food they act upon except the Sucrose - Pepsin match. Pepsin acts upon proteins and not sucrose essentially.
Source: Myschool Past Questions Archive (Record #21511)
Biology
WAEC / WASSCE 2010
Digestive System & Feeding Mechanisms
Solution
Which of the following pH values is the best for the action of the enzymes - renin and pepsin in the
stomach?
A
pH2
B
pH7
C
pH8
D
pH9
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
The suitable pH value for both renin and pepsin in the stomach is highly acidic, typically between 1.5 and 2.5; meaning they function best in a very low pH environment due to the stomach's production of hydrochloric acid. Since, pH 2 falls within that range, therefore option A is the correct answer.
Source: Myschool Past Questions Archive (Record #21512)
Biology
WAEC / WASSCE 2010
Growth, Micro-organisms & Public Health
Solution
The bacterium in a mutualistic association with legumes converts
A
nitrates to ammonia
B
ammonium compounds to nitrites
C
nitrogen gas to ammonia
D
nitrites to nitrates
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
The Rhizobium bacterium in a mutualistic association with legumes converts atmospheric nitrogen , N\(_2\) into ammonia, NH\(_3\). This process, known as nitrogen fixation, provides the plant with a usable form of nitrogen essential for creating amino acids, proteins, and other vital compounds.
Source: Myschool Past Questions Archive (Record #21513)
Biology
WAEC / WASSCE 2010
Digestive System & Feeding Mechanisms
An herbivore cannot feed on a piece of meat because it has no
A
incisors to out the meat
B
canines to tear up the meat
C
premolars to grind the meat
D
molars to mash the meat
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 #21514)
Biology
WAEC / WASSCE 2010
Basic Ecological Concepts, Ecosystems & Biomes
In a particular habitat the role of an organism is referred to as its
A
level
B
biomass
C
niche
D
space
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 #21515)
Biology
WAEC / WASSCE 2010
Basic Ecological Concepts, Ecosystems & Biomes
The distribution of organisms in a fresh water habitat like a stream or pond is determined by the following
factors except
A
light penetration
B
pH of the soil
C
rainfall
D
temperature
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 #21516)
Biology
WAEC / WASSCE 2010
Basic Ecological Concepts, Ecosystems & Biomes
The speed of wind is measured using the
A
wind vane
B
anemometer
C
photometer
D
barometer
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 #21517)
Biology
WAEC / WASSCE 2010
Basic Ecological Concepts, Ecosystems & Biomes
Which of the following is a biotic component of an ecosystem?
A
Soil
B
Rainfall
C
Light
D
Fungi
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 #21518)
Biology
WAEC / WASSCE 2010
Variety of Organisms & Classification of Living Things
Diagram
The part labelled III is the
Attached Figure / Diagram
A
albumen
B
chalaza
C
yolk
D
air space
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 #21504)
Biology
WAEC / WASSCE 2010
Transport System in Plants & Animals
Which of the following statements ls true about transpiration? It is the
A
loss of water in the form of vapour from the surface of the’ leaf
B
loss of water in the form of vapour from the surface of the root
C
absorption of water in the form of vapour from the body of the pint
D
movement of water through the body of the plant.
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 #21505)
Biology
WAEC / WASSCE 2010
Transport System in Plants & Animals
Transportation of water in the xylem tissue involves the following except
A
root pressure
B
capillary action
C
transpiration pull
D
translocation
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 #21506)
Biology
WAEC / WASSCE 2010
Adaptation & Evolution
The following are the major reasons why the butterfly lays eggs under the surface of a leaf except to
A
shade the eggs from the direct rays of the sun.
B
protect the eggs from predators
C
protect the eggs from being washed away by rain drops
D
camouflage the eggs
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 #21507)
Biology
WAEC / WASSCE 2010
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
In which of the following organic compounds is the hydrogen-oxygen ratio equal to 2:1?
A
Proteins
B
Carbohydrates
C
Lipids
D
Vitamins
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 #21508)
Biology
WAEC / WASSCE 2010
Variety of Organisms & Classification of Living Things
A moss plant can withstand drought by means of its
A
spores
B
rhizoids
C
antheridia
D
achegonia
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 #21519)