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Biology WAEC / WASSCE 2018 Cell & Its Environment (Diffusion, Osmosis & Transport)
A seedling was made to stand in a solution of red ink for three hours and a transverse section of the stem was examined under the microscope. The process being investigated was
A
the importance of micro elements to plants
B
ascent of water through the xylem
C
diffusion of colored substances
D
distribution of food in plants
medium Difficulty
Biology WAEC / WASSCE 2018 Variety of Organisms & Classification of Living Things
Which of the following structures would carry out cellular respiration? A
A
germinating seed
B
decolorised leaf
C
dry leaf
D
boiled cowpea
medium Difficulty
Biology WAEC / WASSCE 2018 Variety of Organisms & Classification of Living Things
Which of the following practices may lead to infection of the eye? Use of
A
contact lenses
B
convex lenses
C
biconcave lenses
D
concave lenses
medium Difficulty
Biology WAEC / WASSCE 2018 Respiration & Gaseous Exchange
The structures for gaseous exchange in breathing roots are
A
stomata
B
lenticels
C
cuticle
D
mitochondria
medium Difficulty
Biology WAEC / WASSCE 2018 Variety of Organisms & Classification of Living Things
The diagram above is an illustration of the life cycle of an insect. The adult fly in this cycle is called
Attached Figure / Diagram
Question diagram
A
Housefly
B
Butterfly
C
Cockroach
D
Mosquito
medium Difficulty
Biology WAEC / WASSCE 2018 Reproduction in Plants & Animals
In the diagram above, the larva is also known as
Attached Figure / Diagram
Question diagram
A
Nymph
B
Caterpillar
C
Maggot
D
Chrysalis
medium Difficulty
Biology WAEC / WASSCE 2018 Nutrition in Plants & Animals (Photosynthesis & Food Substances)
The source of energy required by plants during food production is
A
Photosynthesis
B
Chlorophyll
C
Sunlight
D
Microorganisms
medium Difficulty
Biology WAEC / WASSCE 2018 Variety of Organisms & Classification of Living Things
One major difference between plant and animals nutrition is the ability of plants to synthesize
A
Food for plants and animals
B
Water for plants
C
Water for animals
D
Food for plants only
medium Difficulty
Biology WAEC / WASSCE 2018 Nutrition in Plants & Animals (Photosynthesis & Food Substances)
By what process is starch converted into maltose?
A
Hydrolysis
B
Condensation
C
Translocation
D
Photosynthesis
medium Difficulty
Biology WAEC / WASSCE 2018 Transport System in Plants & Animals
The ascent of water in tall trees is mainly due to
A
adhesive forces
B
transpiration pull
C
root pressure
D
cohesive forces
medium Difficulty
Biology WAEC / WASSCE 2018 Digestive System & Feeding Mechanisms
The duodenum of a person was surgically removed. Which of the following substances would have their digestion affected?
A
starch and protein only
B
starch and lipids
C
starch, peptones and maltose
D
starch, protein and lipids
medium Difficulty
Biology WAEC / WASSCE 2018 Digestive System & Feeding Mechanisms
Which of the following dental formulae represents the dentition in rabbits?
A
\(I\frac{2}{1}\) \(C\frac{0}{0}\) \(P\frac{3}{2}\) \(M\frac{3}{3}\)
B
\(I\frac{2}{2}\) \(C\frac{1}{1}\) \(P\frac{2}{2}\) \(M\frac{3}{3}\)
C
\(I\frac{1}{2}\) \(C\frac{0}{0}\) \(P\frac{2}{3}\) \(M\frac{3}{3}\)
D
\(I\frac{2}{1}\) \(C\frac{0}{1}\) \(P\frac{3}{2}\) \(M\frac{3}{3}\)
medium Difficulty
Biology WAEC / WASSCE 2018 Basic Ecological Concepts, Ecosystems & Biomes
In an ecosystem, the least efficient energy transfer link is from the
A
secondary consumers to decomposers
B
sun to producers
C
primary consumers to secondary consumers
D
producer to primary consumers
medium Difficulty
Biology WAEC / WASSCE 2018 Population Ecology, Habitats & Conservation
Xerophytes have the following characteristics aimed at conserving water except
A
thick cuticle
B
broad leaf surfaces
C
sunken stomata
D
waxy cuticle
medium Difficulty
Biology WAEC / WASSCE 2018 Nutrition in Plants & Animals (Photosynthesis & Food Substances)
An association between living organisms in which one lives on and feeds at the expense of the other is known as
A
commensalism
B
predation
C
parasitism
D
mutualism
medium Difficulty
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