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Biology
WAEC / WASSCE 1990
Variety of Organisms & Classification of Living Things
Water in the human body is derived from the following sources except through
A
drinking water
B
food substances
C
cytoplasm of worn-out cells
D
respiratory activity
E
absorption by the skin
medium Difficulty
Verified Correct Answer: Option E
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option E.
Source: Myschool Past Questions Archive (Record #17340)
Biology
WAEC / WASSCE 1990
Population Ecology, Habitats & Conservation
The conservation of natural resources can be achieved by the following except
A
creation of national parks
B
formation of conservation societies and agencies
C
establishment of game reserves
D
deregulated harvesting
E
making laws on conservation
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 #17341)
Biology
WAEC / WASSCE 1990
Basic Ecological Concepts, Ecosystems & Biomes
Water rises most rapidly in
A
sandy soil
B
clayey soil
C
sandy-loam soil
D
loamy soil
E
humus 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 #17342)
Biology
WAEC / WASSCE 1990
Transport System in Plants & Animals
Thrombocytes are blood cells responsible for initiating
A
phagocytosis of bacteria
B
synthesis of ribosomes
C
clotting of the blood
D
immunity to certain infectious diseases
E
removal of carbondioxide from tissues.
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 #17343)
Biology
WAEC / WASSCE 1990
Variation & Genetics (Heredity)
When gametes from pure breeding parents with contrasting features such as tallness and shortness are
involved in monohybrid cross, the offspring in the first filial generation are usually
A
pure breed
B
heterozygous dominant
C
homozygous recessive
D
mutants
E
co-dominant
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 #17344)
Biology
WAEC / WASSCE 1990
Variation & Genetics (Heredity)
Solution
A pair of genes which controls a trait is described as?
A
dominant
B
recessive
C
allele
D
variant
E
hybrid
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
Alleles are different forms of the same gene which are located on the same part of the chromosome.
Alleles contribute to the organism's phenotype, which is the outward appearance of the organism.
Source: Myschool Past Questions Archive (Record #17345)
Biology
WAEC / WASSCE 1990
Variation & Genetics (Heredity)
The genetic make-up of an organism is described as its
A
phenotype
B
genotype
C
character
D
chromosome
E
allele
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 #17346)
Biology
WAEC / WASSCE 1990
Variation & Genetics (Heredity)
The precondition for transfusion of blood to an accident victim is
A
seeking the consent to his parents
B
ascertaining the religious belief of the victim
C
cross-matching the blood group of the donor with that of the accident victim
D
curing the donor of any disease traced in his blood
E
rewarding the donor with food and money.
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 #17347)
Biology
WAEC / WASSCE 1990
Adaptation & Evolution
Adaptive radiation as illustrated by the variety of forms in insects can be regarded as
A
behavioral modification
B
a case of rapid population growth
C
a physiological process
D
an evidence of evolution
E
a population control mechanism
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 #17348)
Biology
WAEC / WASSCE 1990
Adaptation & Evolution
Which of the following statements about the modifications of pentadactyl fore-limb is not correct?
A
Wings are modified for flying in birds
B
Flippers are modified for grasping in sharks
C
Legs are modified for walking and running in antelopes
D
Arms are adapted for grasping and holding in human beings
E
Flippers are modified for swimming in whales
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 #17349)
Biology
WAEC / WASSCE 1990
Adaptation & Evolution
The process by which plants and animals are modified in structure, physiology and behaviour in order to survive is known as
A
evolution
B
adaptation
C
succession
D
aggregation
E
hibernation
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 #17350)
Biology
WAEC / WASSCE 1990
Adaptation & Evolution
What is the significance of the bee dance to other bees?
A
Warning signal
B
Presence of food
C
Mating signal by the male
D
Soaring the enemies away
E
Time for nuptial flight
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 #17351)
Biology
WAEC / WASSCE 1990
Adaptation & Evolution
Which of the following statements is not associated with the theory of natural selection?
A
There is a struggle for existence
B
There is competition among the offsprings
C
The weaker offsprings are eliminated
D
Food and other needs are abundant
E
Nature selects those that survive to reproduce their kind
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 #17352)
Biology
UTME / JAMB 1990
Variety of Organisms & Classification of Living Things
Solution
In a saprophyte, sex organs are produced in the
A
Gamotrophyte
B
Rhizoid
C
Protonema
D
Sporopyte
E
sporophyte
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
In the plant kingdom, sex organs (antheridia and archegonia) are produced by the gametophyte phase, which is the leafy stage in bryophytes like mosses, not the sporophyte phase (saprophyte).
Source: Official Exam / Past Question Archive
Biology
UTME / JAMB 1990
Variety of Organisms & Classification of Living Things
Solution
In a saprophyte, sex organs are produced in the
A
Gamotrophyte
B
Rhizoid
C
Protonema
D
Sporopyte
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
In the plant kingdom, sex organs (antheridia and archegonia) are produced by the gametophyte phase, which is the leafy stage in bryophytes like mosses, not the sporophyte phase (saprophyte).
Source: Myschool Past Questions Archive (Record #41346)