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Biology
WAEC / WASSCE 1993
Variation & Genetics (Heredity)
One of the major criticisms against ‘Mendelian laws is that they do not recognize that
A
one trait is often controlled by many pairs of genes
B
single factor inheritance is never a reality
C
complete dominance is always possible
D
incomplete dominance is not possible
E
hybrids exist in living organisms
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 #16843)
Biology
WAEC / WASSCE 1993
Variation & Genetics (Heredity)
Identical twins inherit their genes from
A
the same ovum and different sperms
B
the same sperm and different ova
C
different sperms and many ova
D
the same ovum and the same sperm
E
many ova and many sperms
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 #16844)
Biology
WAEC / WASSCE 1993
Variation & Genetics (Heredity)
The offspring produced when pure strains interbreed is described as
A
dominance
B
phenotype
C
allele
D
genotype
E
hybrid
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 #16845)
Biology
WAEC / WASSCE 1993
Variation & Genetics (Heredity)
Which of the following diseases or disorders can be prevented by the application of the knowledge of
heredity through marriage counselling?
A
Sickle cell anaemia
B
Haemophilia
C
Diabetes mellitus
D
Colour blindness
E
River blindness
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 #16846)
Biology
WAEC / WASSCE 1993
Adaptation & Evolution
Solution
The swarming especially at the beginning of the rainy season is a courtship behaviour shown by?
A
migratory birds
B
pigeons
C
crickets
D
winged termites
E
bees
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
At certain times of the year, termite colonies produce “swarmers”
- the winged adults that fly away to form their own colonies.
Source: Myschool Past Questions Archive (Record #16860)
Biology
WAEC / WASSCE 1993
Adaptation & Evolution
Lamarck’s evolution theory could be summarised by the statement that
A
only the fittest can survive in a challenging environment
B
species that are unable to adapt become extinct
C
new characteristics do not arise in organisms in time of need
D
the changing environment imposes structural physiological and behavioural changes in organisms
E
in a changing and unstable environment nature rejects the weak
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 #16862)
Biology
WAEC / WASSCE 1993
Variety of Organisms & Classification of Living Things
The property of clay soil that prevents it from supporting thick vegetation is its
A
possession of chemically weathered granite rocks
B
inability to retain much water
C
tendency of becoming waterlogged
D
porosity and low water retention ability
E
high capillary spaces between the soil particles
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 #16863)
Biology
WAEC / WASSCE 1993
Variation & Genetics (Heredity)
Diagram
Study the genetic cross above showing the inheritance of blood groups from the cross above which of the following F offspring does not
belong to the father?
Attached Figure / Diagram
A
AA
B
AO
C
OB
D
OO
E
AB
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 #16850)
Biology
WAEC / WASSCE 1993
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Which of the following is a function of the chromosome?
A
Transmission of hereditary traits
B
Protein synthesis
C
Excretion
D
Energy production
E
Manufacture of enzyme
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 #16852)
Biology
WAEC / WASSCE 1993
Adaptation & Evolution
Which of the following does not illustrate adaptation to the
environment?
A
Colour changes by chameleon
B
Streamline shape of fishes
C
Light bones in birds
D
Development of big muscles by a weight lifter
E
Possession of tins by fishes
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 #16853)
Biology
WAEC / WASSCE 1993
Reproduction in Plants & Animals
The changing of colour by a chameleon to that of the environment is
an example of
A
adaptive radiation
B
protective coloration
C
courtship display
D
display of body colour
E
territorial behaviour
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 #16854)
Biology
WAEC / WASSCE 1993
Adaptation & Evolution
The division of labour in social insects is an example of
A
structural adaptation
B
physiological adaptation
C
commensalism
D
behavioural adaptation
E
hormonal influence
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 #16856)
Biology
UTME / JAMB 1993
Variety of Organisms & Classification of Living Things
After circulation in the lungs, the blood returns to the left auricle through
A
1
B
4
C
5
D
6
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: Official Exam / Past Question Archive
Biology
UTME / JAMB 1993
Variety of Organisms & Classification of Living Things
Diagram
Solution
Which of the following is the correct order of the developmental stages?
Attached Figure / Diagram
A
1->2->3->4->5
B
5->1->3->2->4
C
2->1->3->4->5
D
5->3->2->1->4
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
.
Source: Myschool Past Questions Archive (Record #41356)
Biology
UTME / JAMB 1993
Respiration & Gaseous Exchange
Diagram
Stage 3 breathes
Attached Figure / Diagram
A
with the lungs
B
with the external gills
C
with the internal gills
D
through the skin
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 #41357)