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Biology
WAEC / WASSCE 2004
Population Ecology, Habitats & Conservation
Plants found in the aquatic habitat are generally referred to as
A
epiphytes
B
halophytes
C
xerophytes
D
hydrophytes
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 #20486)
Biology
WAEC / WASSCE 2004
Variety of Organisms & Classification of Living Things
When a farmer sprays crops with a pesticide, the pesticide becomes
A
poisonous to all plants
B
is broken down by soil algae
C
easily washed down into lakes and rivers
D
absorbed by bodies of mammals
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 #20487)
Biology
WAEC / WASSCE 2004
Basic Ecological Concepts, Ecosystems & Biomes
Which of the following methods is best for the determination of population density of Tridax in an open held?
A
transect
B
quadrat
C
Sweep-net
D
pit-fall
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 #20488)
Biology
WAEC / WASSCE 2004
Variety of Organisms & Classification of Living Things
If a piece of abandoned farmland went through a series of floral and faunal changes and became established with
permanent plant and animal population, it could be said to have undergone
A
transformation
B
succession
C
competition
D
evolution
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 #20489)
Biology
WAEC / WASSCE 2004
Growth, Micro-organisms & Public Health
Solution
The drugs which inhibit the growth of disease-causing organisms and thus used in the treatment of infections are referred to as
A
antibodies
B
antibiotics
C
antitoxic
D
septics
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
The drugs that inhibit the growth of disease-causing organisms and are used to treat infections are referred to as antibiotics.
Antibiotics are medications that target bacteria and are used to treat and prevent bacterial infections. They can either kill bacteria or stop them from reproducing, allowing the body's natural defenses to eliminate them.
Source: Myschool Past Questions Archive (Record #20490)
Biology
WAEC / WASSCE 2004
Variety of Organisms & Classification of Living Things
An abandoned refuse dump mag' be a good site for an intending vegetable farmer because
A
. very little manual work would be done by the farmer
B
microbial activity had released nutrients into the soil
C
the roots of vegetable seedlings easily get enough light
D
refuse dumps possess plenty of gas which scares away rodents
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 #20491)
Biology
WAEC / WASSCE 2004
Variety of Organisms & Classification of Living Things
The following are natural resources except
A
rubber
B
soil
C
water
D
cellophane
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 #20492)
Biology
WAEC / WASSCE 2004
Variety of Organisms & Classification of Living Things
Which of the following practices does not contribute to intensive depletion of forest resources in West Africa?
A
Use of powerful tools for felling trees
B
regrowing of forest trees
C
clearance of forests for cash crops
D
use of fire or hunting in forests
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 #20493)
Biology
WAEC / WASSCE 2004
Population Ecology, Habitats & Conservation
Solution
Tropical rain forests can be conserved by the following practices except?
A
agroforestry
B
deforestation
C
shifting cultivation
D
crop rotation
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
Deforestation leads to a huge loss of biodiversity. About 80% of the global biodiversity is located in tropical rainforests.
Source: Myschool Past Questions Archive (Record #20494)
Biology
WAEC / WASSCE 2004
Variation & Genetics (Heredity)
Which of these physiological variations is sex-linked?
A
albinism
B
blood groups
C
sickle-cell anaemia
D
haemophilic condition
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 #20495)
Biology
WAEC / WASSCE 2004
Variation & Genetics (Heredity)
The ability of some individuals to taste phenylthiocarbamide (PTC) is a
A
morphological adaptation
B
morphological variation
C
physiological adaptation
D
physiological 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 #20496)
Biology
WAEC / WASSCE 2004
Variation & Genetics (Heredity)
In man, sex is determined by the inheritance of
A
a pair of homologous chromosomes
B
an extra chromosome in the cells of a female
C
a dominant gene for maleness present in man
D
two similar X chromosomes in the female and X and Y chromosomes in the male.
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 #20497)
Biology
WAEC / WASSCE 2004
Variation & Genetics (Heredity)
What will be the genotypic ratio when two heterozygous red pea plants are crossed?
A
1 : 0
B
1 : 2 : 1
C
2 : 1
D
3 : 1
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 #20498)
Biology
WAEC / WASSCE 2004
Variation & Genetics (Heredity)
Which of the following traits in humans can be affected by environmental factors?
A
skin colour
B
eye colour
C
baldness
D
tongue-rolling
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 #20499)
Biology
WAEC / WASSCE 2004
Variation & Genetics (Heredity)
Solution
Heterozygous tall plants were crossed with pure-breeding dwarf plants of the same species. What were the approximate percentages of the offspring?
A
100% tall 0% dwarf
B
75% tall 25% dwarf
C
50% tall 50% dwarf
D
25% tall 75% dwarf
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
A heterozygous tall plant (say Tt) crossed with pure-breeding dwarf plants (tt) will give a set of Tt, Tt, tt and tt. This is 50% tall and 50% dwarf approximately.
Source: Myschool Past Questions Archive (Record #20500)