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Biology
WAEC / WASSCE 2005
Variation & Genetics (Heredity)
Solution
A person with blood group B can only donate blood to individuals with blood groups
A
A and B
B
B and AB
C
O only
D
B only
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
Blood Group B contains B antigens on the surface of the red blood cells and Anti-A antibodies in the plasma.
Individuals with Blood Group B can donate to Group B: Because they share the same antigen and won't have an immune reaction and Group AB: Because individuals with AB blood do not have Anti-A or Anti-B antibodies in their plasma, making them "universal recipients" who can safely receive B antigens.
Source: Myschool Past Questions Archive (Record #20804)
Biology
WAEC / WASSCE 2005
Reproduction in Plants & Animals
If the pink colour of a petal is dominant over white what would be the colour of the flower of the F generation when a pure pink flowered plant is crossed with a white flowered plant?
A
Purple
B
Pink
C
White
D
Yellow
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 #20805)
Biology
WAEC / WASSCE 2005
Variation & Genetics (Heredity)
If two parents are sickle cell carriers then their genotypes would be
A
HbA HbA and HbS HbS
B
. HbS BbS and HbS BbS
C
HbA HbS and HbA HbS
D
HbA HbA and HbA HbA
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 #20806)
Biology
WAEC / WASSCE 2005
Variation & Genetics (Heredity)
Which disease is sex-linked and mainly afflicts male offspring?
A
Sickle cell anaemia
B
Haemophilia
C
Diabetes
D
Malaria
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 #20807)
Biology
WAEC / WASSCE 2005
Cell Structure, Organization & Cell Division
In a living cell, factors which are responsible for inheritance are located
A
on the nuclear membrane
B
on the nucleolus
C
on the chromosomes
D
in the nucleoplasm
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 #20810)
Biology
WAEC / WASSCE 2005
Variation & Genetics (Heredity)
Which of the following is not a correct base pairing on the DNA strand?
A
Adenine, Thymine
B
Cytosine, Guanine
C
Guanine, Cytosine
D
Uracil, Thymine
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 #20811)
Biology
WAEC / WASSCE 2005
Adaptation & Evolution
Which of the following organisms is a social insect?
A
Grasshopper
B
Honey bee
C
Butterfly
D
Housefly
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 #20812)
Biology
WAEC / WASSCE 2005
Variety of Organisms & Classification of Living Things
Territoriality is a phenomenon among
A
lower organisms
B
plants of different species
C
male animals with a group of females
D
animals and plants
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 #20813)
Biology
WAEC / WASSCE 2005
Variety of Organisms & Classification of Living Things
A honey bee worker communicates with others on locating a source of food by
A
dancing
B
stinging
C
instinct
D
flares
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 #20814)
Biology
WAEC / WASSCE 2005
Adaptation & Evolution
Which of the following is not an evidence of evolution?
A
Fossil records
B
Comparative embryology
C
Polymorphism
D
Comparative anatomy
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 #20817)
Biology
UTME / JAMB 2005
Respiration & Gaseous Exchange
Solution
An evidence of a common ancestral for fishes, amphibians, reptiles, birds and mammals is the
A
possession of wings by birds and bats
B
cold-bloodedness of fishes, amphibians and reptile
C
presence of gill clefts in vertebrate embryos
D
possession of scale by fish and reptiles
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
The evidence for a common vertebrate ancestor includes similarities in embryonic development (like gill slits and tails), shared anatomical features, and fossil evidence, all pointing to a shared evolutionary history.
Vertebrate embryos, even those of different species, exhibit striking similarities in their early stages, including the presence of gill slits (pharyngeal pouches) and a tail, even if these features are later lost in the adult form.
Comparative embryology as a field of study highlights the similarities in the early development of different vertebrate species, suggesting a common ancestor from which these features were inherited. For example, all vertebrate embryos have gill slits and tails, which are later lost in some species, such as humans, where the tail is reduced to the tailbone.
Source: Official Exam / Past Question Archive
Biology
NECO SSCE 2005
Digestive System & Feeding Mechanisms
The following can increase crop production EXCEPT
A
erosion control
B
fertilizer application
C
mechanization
D
monocropping
E
pest control
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 #42256)
Biology
NECO SSCE 2005
Digestive System & Feeding Mechanisms
Which of the following enzymes requires acidic medium to function?
A
Amylase
B
Erepsin
C
Maltose
D
Pepsin
E
Ptyalin
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 #42257)
Biology
NECO SSCE 2005
Supporting Tissues & Skeletal System
Solution
Which of the following is NOT a type of exoskeleton?
A
Cartilage
B
Chitin
C
Hoot
D
Nail
E
Shell
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
Cartilage is not a type of exoskeleton; cartilage is a flexible, semi-rigid connective tissue that forms a major part of an endoskeleton (internal skeleton). An exoskeleton is a skeleton on the outside of the body, like the shell of a crab or the chitinous armor of an insect.
Source: Myschool Past Questions Archive (Record #42258)
Biology
NECO SSCE 2005
Variation & Genetics (Heredity)
The number of chromosomes in a gamete is represented by
A
n
B
2n
C
4n
D
23n
E
46n
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 #42259)