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Biology
WAEC / WASSCE 2014
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
In a Biuret test , some protein was mixed with sodium hydroxide solution. Which of the following chemicals should be added to the mixture for a positive result?
A
mercurous nitrate
B
copper sulphate
C
sodium carbonate
D
silver nitrate
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 #35848)
Biology
WAEC / WASSCE 2014
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Solution
A characteristic feature of plant parasites is the
A
possession of holdfast
B
possession of rhizoids
C
development of hanging roots
D
development of haustoria
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
A parasitic plant is one that derives some or all of its nutritional requirements from another living plant. All parasitic plants have modified roots, named haustoria (singular: haustorium), which penetrate the host plants, connecting them to the conductive system - either the xylem, the phloem, or both. This provides them with the ability to extract water and nutrient from the hosts. About 4,100 species in approximately 19 families of flowering plants are known.
Source: Myschool Past Questions Archive (Record #35849)
Biology
WAEC / WASSCE 2014
Basic Ecological Concepts, Ecosystems & Biomes
The part of a leguminous plant where bacteria like Azotobacter can be found is
A
at the nodes of the stem
B
at the internodes
C
in the root nodules
D
in the spongy mesophyll
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 #35850)
Biology
WAEC / WASSCE 2014
Basic Ecological Concepts, Ecosystems & Biomes
The following habitats can be found in West Africa except
A
mangrove swamp
B
sahel savanna
C
savanna grassland
D
temperate grassland
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 #35851)
Biology
WAEC / WASSCE 2014
Variety of Organisms & Classification of Living Things
The following adaptations are associated with the flight of birds except
A
reduced body weight
B
streamlined shape
C
presence of powerful muscles
D
clawed digits
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 #35852)
Biology
WAEC / WASSCE 2014
Basic Ecological Concepts, Ecosystems & Biomes
The difference between a community and population is
A
a community is made up of organisms of the same species while a population is made up of organisms of different species
B
a community is made up of populations of living organisms while a populations is made up of organisms of the same secies
C
an ecological niche does not exist in the community but it does in a population
D
a community attracts competition but a population does not
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 #35853)
Biology
WAEC / WASSCE 2014
Variety of Organisms & Classification of Living Things
Which of the following statements about the circulation of water in nature is not correct? Water
A
constantly evaporates from seas, rivers, lakes and soil
B
vapour rises, cools, condenses and precipitates as rain and dew
C
removed from ocean is permanently lost
D
is lost in plants by transpiratin and decay
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 #35854)
Biology
WAEC / WASSCE 2014
Variety of Organisms & Classification of Living Things
Solution
The following organisms are consumers except
A
earthworm
B
spirogyra
C
bacteria
D
Rhizopus
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
Generally, in a food chain, producers are autotrophs. i.e They produce their own food by themselves.
Spirogyra is a producer, specifically a type of green algae. As a producer, it can convert sunlight into energy through photosynthesis, creating its own food.
Source: Myschool Past Questions Archive (Record #35855)
Biology
WAEC / WASSCE 2014
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Solution
l. Fertilizer II. Insecticides III. Sewage IV. Crude oil V. Sulphur dioxide. The atmosphere can be polluted by
A
l only
B
lll only
C
lV only
D
ll and lV only
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
Pesticides that are sprayed on to fields and used to fumigate soil can give off chemicals called volatile organic compounds, which can react with other chemicals and form a pollutant called ground level ozone.
Crude oil extraction, transportation, refinement, and burning release greenhouse gases like carbon dioxide and methane, contributing to climate change and air pollution, with harmful effects on human health and the environment.
Source: Myschool Past Questions Archive (Record #35856)
Biology
WAEC / WASSCE 2014
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Which of the following substances constitute domestic waste?
I Fertilizer II. Insecticides III. Sewage IV. Crude oil
V. Sulphur dioxide
A
l only
B
lll only
C
lV only
D
ll and V only
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 #35857)
Biology
WAEC / WASSCE 2014
Variety of Organisms & Classification of Living Things
Which of the following natural resources is non-renewable?
A
Water
B
Coal
C
Forest
D
Air
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 #35858)
Biology
WAEC / WASSCE 2014
Population Ecology, Habitats & Conservation
Which of the following statement is not a reason for banning bush burning? It
A
allows for quick regrowth of grasses
B
Kills soil microorganisms.
C
leaves the soil bare of vegetation
D
burns off organic soil nutrients
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 #35859)
Biology
WAEC / WASSCE 2014
Variation & Genetics (Heredity)
Characteristics that exhibit continuous variation are generally controlled by
A
a single gene
B
recessive genes
C
epistatic interactions
D
multiple genes
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 #35860)
Biology
WAEC / WASSCE 2014
Variation & Genetics (Heredity)
Differences in characteristics that exist among individuals of the same species is referred to as
A
genetics
B
dominance
C
hybird
D
variation
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 #35861)
Biology
WAEC / WASSCE 2014
Variation & Genetics (Heredity)
Solution
Which of the following traits is not a morphological variation in humans?
A
Ability to taste PTC
B
Colour
C
Fingerprints
D
Size
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
The ability to taste PTC (phenylthiocarbamide) is not an example of morphological variation, but rather a physiological variation, as it relates to taste perception, which is a functional trait, not a structural one.
Morphological variation: refers to differences in the physical structure or form of an organism, such as variations in bone structure, skin color, or body shape.
Physiological variation, on the other hand, relates to differences in the function or processes of an organism, such as variations in metabolism, hormone levels, or, in this case, taste perception.
The ability to taste PTC is determined by a single gene (TAS2R38) that codes for a bitter-taste receptor on the tongue.
Different variations, or alleles, of this gene determine whether PTC tastes bitter or not.
The ability to taste PTC is a classic example of a genetic trait that varies in human populations, and the variation is linked to the function of a specific taste receptor.
Source: Myschool Past Questions Archive (Record #35862)