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Biology
WAEC / WASSCE 1989
Cell Structure, Organization & Cell Division
Solution
Which of the following is not true of the nucleus of a living cell? It contains
A
chromosome
B
Nucleolus
C
nucleoplasm
D
chromatids
E
ribosomes
medium Difficulty
Verified Correct Answer: Option E
Biological Concept & Syllabus Guide
From the above diagram, we see that the components of the nucleus excludes ribosomes.
Source: Myschool Past Questions Archive (Record #16478)
Biology
WAEC / WASSCE 1989
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
The cell membrane consists of
A
carbohydrates and lipids
B
vitamins and proteins
C
lipids and proteins
D
water and sugar
E
starch and cellulose
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 #16479)
Biology
WAEC / WASSCE 1989
Cell Structure, Organization & Cell Division
Which of the following is not likely to be found in the cell of a ripe tomato fruit?
A
plastids
B
Chlorophyll
C
Cellulose cell wall
D
Mitochondrion
E
Mineral salts
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 #16480)
Biology
WAEC / WASSCE 1989
Excretion & Homeostasis
Diagram
Which of the following structures is responsible for osmoregulation?
Attached Figure / Diagram
A
I
B
II
C
III
D
IV
E
V
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 #16463)
Biology
WAEC / WASSCE 1989
Excretion & Homeostasis
Diagram
Solution
Excretion is carried out through the structure labelled
Attached Figure / Diagram
A
I
B
III
C
IV
D
V
E
VI
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
Euglena uses a contractile vacuole to remove excess water and excrete waste. This organelle removes excess water from the cell through a process called osmoregulation. The vacuole is surrounded by smaller vacuoles that drain into it. The vacuole then empties into a reservoir, where the fluid escapes through the gullet.
From the diagram provided in the question, the contractile vacuole is labelled IV - Option C
Source: Myschool Past Questions Archive (Record #16464)
Biology
WAEC / WASSCE 1989
Excretion & Homeostasis
Diagram
Solution
The part labelled II is made up of
Attached Figure / Diagram
A
carbohydrates
B
contractile vacuole
C
waste materials
D
protein materials
E
food particles
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
The unicellular euglena needs to regulate water levels within its body uses a contractile vacuole for this, which expels excess water and thus ensures osmoregulation.
Source: Myschool Past Questions Archive (Record #16466)
Biology
WAEC / WASSCE 1989
Variety of Organisms & Classification of Living Things
Which of the following constitutes the main internal tissue of a leaf?
A
Cuticle
B
Mesophyll
C
Vascular tissue
D
Lower epidermis
E
Upper epidermis
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 #16897)
Biology
WAEC / WASSCE 1989
Variety of Organisms & Classification of Living Things
Four cells with osmotic potential equivalent to that of 3% salt solution were immersed respectively in solutions
of different concentrations labeled as follows: I = 4% salt solution; II = 6% salt solution III = 1% salt solution;
IV = 10% salt solution; V = 5% salt solution. Which of the solutions will cause an increase in osmotic
pressure within the cell?
A
I
B
II
C
III
D
IV
E
V
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 #16899)
Biology
WAEC / WASSCE 1989
Cell & Its Environment (Diffusion, Osmosis & Transport)
Which of the following statements is not true of osmotic process?
A
There must be a selectively permeable membrane
B
The two solutions must be of different concentrations initially
C
t involves only the movement of water molecules
D
Equilibrium is reached when there is equal distribution of water molecules
E
. The two solutions are of equal concentration at the beginning of experiment.
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 #16902)
Biology
WAEC / WASSCE 1989
Excretion & Homeostasis
Which of the following is the correct route for the movement of materials through the kidney?
A
Glomerulus → Bowman’s capsule → Loop of Henle → Collecting tubule → Pelvis
B
Glomerulus → Loop of Henle → Collecting tubule → Bowman’s capsule → Pelvis
C
Pelvis → Bowman’s capsule → Glomerulus →Loop of Henle → Collecting tubule
D
Bowman’s capsule → Glomerulus → Loop of Henle → Collecting tubule → Pelvis
E
Bowman’s capsule → Loop of Henle →Glomerulus → Collecting tubule → Pelvis
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 #16909)
Biology
WAEC / WASSCE 1989
Nervous, Hormonal Coordination & Sense Organs
Which of the following is the function of the hormone in the lslets of Langerhans?
A
is used in protein metabolism
B
is involved in sugar synthesis
C
aids the rate at which glucose is converted to glycogen
D
controls the fluid content of the body
E
plays a role in the pH balance of the body fluid
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 #16913)
Biology
WAEC / WASSCE 1989
Transport System in Plants & Animals
Blood in mammals transports oxygen because it contains the pigment called
A
haemoglobin
B
chlorocruorin
C
melanin
D
haemocyanin
E
haemoerythrin.
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 #16915)
Biology
WAEC / WASSCE 1989
Digestive System & Feeding Mechanisms
Diagram
Solution
In which of the following is cilia not associated with movement or transport of materials?
Attached Figure / Diagram
A
Fallopian tube funnel
B
Ectoplasm of paramecium
C
Lining of the mammalian trachea
D
Mammalian alimentary canal
E
Oral groove of paramecium.
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
The movements that propel the food particles through the digestive tract are called peristalsis. These are rhythmic waves of contractions that move the food particles through the various regions in which mechanical and chemical digestion takes place.
Source: Myschool Past Questions Archive (Record #16919)
Biology
WAEC / WASSCE 1989
Variety of Organisms & Classification of Living Things
Diagram
The pilaferous layers is labelled
Attached Figure / Diagram
A
I
B
II
C
III
D
IV
E
V
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 #16950)
Biology
WAEC / WASSCE 1989
Supporting Tissues & Skeletal System
Diagram
The xylem is labelled
Attached Figure / Diagram
.jpg)
A
II
B
IV
C
V
D
VI
E
VII
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 #16953)