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Biology
WAEC / WASSCE 2002
Variation & Genetics (Heredity)
Which of these statements is true about fingerprint patterns?
A
Consistent for a lifetime
B
May be exactly the same for two individuals
C
Prominent only at puberty
D
Correlate with the individual blood group
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 #20432)
Biology
WAEC / WASSCE 2002
Variety of Organisms & Classification of Living Things
Some species of animals and plants are considered as endangered, because
A
they are found in large numbers in most habitats
B
they are harmful to theta natural habitats
C
their populations have become so small that they may soon die out
D
they should be killed or only kept in cages
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 #20433)
Biology
WAEC / WASSCE 2002
Variation & Genetics (Heredity)
Which of the following is a continuous variation, in human population?
A
Sex
B
Rh factor
C
Height
D
Down`s syndrome
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 #20434)
Biology
WAEC / WASSCE 2002
Variation & Genetics (Heredity)
Which of the following statements about blood groups in human is not correct?
A
Siblings may not belong to the same blood group
B
There are four possible blood groups
C
People with blood group O can receive blood from all other groups
D
People with blood group AB are universal recipients
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 #20435)
Biology
WAEC / WASSCE 2002
Variation & Genetics (Heredity)
When Mendel crossed round seeds with wrinkled seeds of Pea Plant, what was the ratio of wrinkled seeds
to round seeds in the F2 plants?
A
3 : 1
B
2 : 1
C
1 : 3
D
1 : 2
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 #20436)
Biology
WAEC / WASSCE 2002
Variation & Genetics (Heredity)
Which of the following is not a morphological variation in human beings?
A
Size
B
Blood groups
C
Colour
D
Fingerprints.
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 #20437)
Biology
WAEC / WASSCE 2002
Variation & Genetics (Heredity)
The name given to a sudden change in a gene or chromosome that can be passed on to the offspring is
A
inheritance
B
linkage
C
alleles
D
mutation
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 #20438)
Biology
WAEC / WASSCE 2002
Variation & Genetics (Heredity)
Solution
In humans, sex is determined by
A
two homologous chromosomes
B
a dominant gene for maleness present in a male
C
two similar sex chromosomes in the male and dissimilar in the female
D
the differences in the nature of the X and Y chromosomes in the male.
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
In humans, sex is determined by the difference in the nature of the X and Y chromosomes in males. Females have two of the same kind of sex chromosome (XX), while males have two distinct sex chromosomes (XY). The presence of the Y chromosome determines maleness because it carries the SRY gene, which triggers the development of male characteristics. The X chromosome carries genes related to both male and female sexual development.
Source: Myschool Past Questions Archive (Record #20439)
Biology
WAEC / WASSCE 2002
Variation & Genetics (Heredity)
A man with heterozygous genotype for blood group B marries a woman with heterozygous A, what percentage
(%) of their children would be universal donor?
A
50%
B
25%
C
15%
D
10%
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 #20440)
Biology
WAEC / WASSCE 2002
Variation & Genetics (Heredity)
The genes affecting the same trait and are located at the same position on the homologous chromosomes
are called
A
autosomes
B
alleles
C
loci
D
chromatids
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 #20441)
Biology
WAEC / WASSCE 2002
Basic Ecological Concepts, Ecosystems & Biomes
Which of the following is an adaptation by plants to reduce the rate of water loss in a dry habitat? Possession of
A
a few sunken stomata on the lower epidermis only
B
long leaf tendrils
C
leaves with serrated edges
D
strong tap root
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 #20442)
Biology
WAEC / WASSCE 2002
Adaptation & Evolution
The following are social insects except
A
wasps
B
termites
C
bees
D
cotton stainer
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 #20443)
Biology
WAEC / WASSCE 2002
Adaptation & Evolution
Solution
Which of the following can be considered as a direct evidence of evolution?
A
Classification
B
Comparative anatomy
C
Comparative embryology
D
Fossil record
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
The fossil record is considered direct evidence of evolution. Fossils are the preserved remains or traces of animals, plants, and other organisms from the past. Over time, species have changed and developed, becoming more complex. This change and development can be seen in the fossil record, making it a direct evidence of evolution. Classification, comparative anatomy, and comparative embryology are all indirect evidence of evolution.
Source: Myschool Past Questions Archive (Record #20444)
Biology
UTME / JAMB 2002
Supporting Tissues & Skeletal System
Solution
The correct evolutionary sequence of the organisms represented is
A
IV->II->III->I
B
III->II->I->IV
C
II->III->IV->I
D
I->III=>II->IV
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
The first to evolve is the bony fish which evolved from a jawless fish. The amphibians evolved next after fish. The first amphibians evolved from a lobe-finned fish ancestor about 365 million years ago. They were the first vertebrates to live on land, but they had to return to water to reproduce. For this reason, they had to live near water bodies. They had few characteristics of fish in their early life. The reptiles evolved from the amphibians. They lived completely on land. They laid amniotic eggs and had fertilization. They were the first vertebrates that didn't have to return to water for reproduction. Reptiles developed certain added features such as feathers, hollow bones, and warm bodies. These animals were called birds or Aves. Then mammals.
Note: Mammals and birds both evolved from reptiles-like ancestors.
Source: Official Exam / Past Question Archive
Biology
UTME / JAMB 2002
Nervous, Hormonal Coordination & Sense Organs
Diagram
Solution
A hormone secreted at IV serves to
Attached Figure / Diagram
A
make the body react to emergencies
B
lower blood glucose level
C
raise the level of calcium ions in the blood
D
facilitate the development of facial hairs
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
The primary hormone facilitating facial hair development in both men and women is testosterone, along with its derivative dihydrotestosterone (DHT). These androgens stimulate hair follicle growth, converting fine, vellus hairs into thicker, darker terminal hairs, particularly in areas like the face, chest, and back.
Testosterone is the main androgen hormone responsible for the development of male secondary sexual characteristics, including facial hair. It also plays a role in hair growth in women, although in lower concentrations. Testosterone is primarily found in the testicles (testes) in men and ovaries in women. Additionally, adrenal glands in both sexes also produce testosterone, though in smaller amounts.
Source: Myschool Past Questions Archive (Record #41431)