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Biology
UTME / JAMB 2020
Adaptation & Evolution
The only caste in the termite colony whose members can feed themselves are the
A
workers
B
reproductives
C
soldiers
D
nymphs
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 #56852)
Biology
UTME / JAMB 2020
Variation & Genetics (Heredity)
Solution
Which of the following is the best explanation for a child who is phenotypically short and born of two tall parents?
A
both parents possess genes for shortness
B
the father possesses a gene for shortness
C
Nature makes the child short.
D
The mother possesses genes for shortness
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
Height is a polygenic trait, meaning it is controlled by multiple genes. In simplified Mendelian genetics often used for such questions, "shortness" is typically treated as a recessive trait. For a child to be phenotypically short (express the trait) while both parents are tall, each parent must be a heterozygous carrier. This means they both carry a dominant gene for "tallness" (which they express) and a hidden recessive gene for "shortness." The child becomes short by inheriting one recessive "shortness" gene from each parent.
Source: Myschool Past Questions Archive (Record #56853)
Biology
UTME / JAMB 2020
Supporting Tissues & Skeletal System
Which of the following vertebrates has the most simple structured heart
A
reptile
B
fish
C
mammal
D
Amphibian
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 #56854)
Biology
UTME / JAMB 2020
Adaptation & Evolution
Diagram
Use the diagram to answer the question.
The type of protective adaption exhibited by the animal is
Attached Figure / Diagram
A
disruptive colouration
B
flash colouration
C
countershading colouration
D
warning colouration
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 #56855)
Biology
WAEC / WASSCE 2020
Cell Structure, Organization & Cell Division
The cell as the basic unit of life consists of
A
cell wall and vacuole
B
nucleus and cell wall
C
cytoplasm and nucleus
D
cytoplasm and vacuole
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 #59442)
Biology
WAEC / WASSCE 2020
Variety of Organisms & Classification of Living Things
Use the following Classes of Arthropoda to answer the question below
I. Crustacea II. Insecta III. Arachinda IV. Chilopoda
Which members of the classes live mainly in an aquatic habitat?
A
I
B
II
C
III
D
IV
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 #59444)
Biology
WAEC / WASSCE 2020
Variety of Organisms & Classification of Living Things
Use the following Classes of Arthropoda to answer the question below
I. Crustacea II. Insecta III. Arachinda IV. Chilopoda
Which of the classes is characterised by the possession of two pairs of antennae?
A
I
B
II
C
III
D
IV
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 #59445)
Biology
WAEC / WASSCE 2020
Cell Structure, Organization & Cell Division
Solution
The organism with spiral chloroplasts and nucleus suspended by cytoplasmic strands is
A
Volvox
B
Spirogyra
C
Paramecium
D
Euglena
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
Spirogyra is a filamentous charophyte green alga of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteristic of the genus.
Source: Myschool Past Questions Archive (Record #59448)
Biology
WAEC / WASSCE 2020
Cell Structure, Organization & Cell Division
The network of double membrane that conveys materials through the cytoplasm is the
A
plasma membrane
B
nuclear membrane
C
mitochondrion
D
endoplasmic reticulum
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 #59450)
Biology
WAEC / WASSCE 2020
Reproduction in Plants & Animals
Diagram
Solution
The diagram above is an illustration of the longitudinal section of a plant organ. Study to answer the question below.
Food is stored in the part labeled
 -->
<div class=)
Attached Figure / Diagram
A
I
B
II
C
III
D
IV
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
- An onion bulb is a type of plant storage organ.
- The bulbs are composed of shortened, compressed, underground stems surrounded by fleshy modified scale (leaves) that envelop a central bud at the tip of the stem.
Source: Myschool Past Questions Archive (Record #59452)
Biology
WAEC / WASSCE 2020
Reproduction in Plants & Animals
Diagram
Solution
The diagram above is an illustration of the longitudinal section of a plant organ. Study it and answer the question below;
The plant is a?
Attached Figure / Diagram
A
stem tuber
B
bulb
C
stolon
D
runner
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
an onion is a bulb because it has a reduced stem and thick fleshy leaves
Source: Myschool Past Questions Archive (Record #59453)
Biology
WAEC / WASSCE 2020
Transport System in Plants & Animals
Diagram
Solution
The diagram above is an illustration of an experimental setup. Study it and answer the question below;
The setup can measure comparatively the rate of
Attached Figure / Diagram
A
evaporation from leaves on a single shoot under different experimental conditions
B
salt uptake by shoots from different plants
C
transpiration of a single shoot of a plant under different experimental conditions
D
water uptake by roots of different plants
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
The set-up can measure comparatively the rate of transpiration of a single shoot of a plant under different experimental conditions. Transpiration is the process of water movement through a plant and its evaporation from aerial parts, primarily from the leaves. In the illustration, the plant shoot is enclosed in a container, and the amount of water lost from the shoot is measured. By changing the experimental conditions, such as the temperature or humidity, and measuring the transpiration rate under each set of conditions, the set-up can be used to compare the rates of transpiration under different conditions for a single shoot of a plant.
Source: Myschool Past Questions Archive (Record #59478)
Biology
WAEC / WASSCE 2020
Variety of Organisms & Classification of Living Things
The respiratory organ of a cockroach
A
air sac
B
trachea
C
lung book
D
lung
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 #59487)
Biology
WAEC / WASSCE 2020
Excretion & Homeostasis
The excretory product of some reptiles, birds and insects is
A
urea
B
urine
C
ammonia
D
uric acid
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 #59488)
Biology
WAEC / WASSCE 2020
Excretion & Homeostasis
Solution
The part of the mammalian kidney that stores urine is the
A
capsule
B
medulla
C
pelvis
D
bladder
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
The bladder functions as a reservoir and active excretory organ for the urine. Urine excreted by the kidneys passes through the ureters and the ureterovesical junction into the bladder. However, the urine collects in the renal pelvis, which drains into the ureter . Then, the urine moves into the ureter for storage in the urinary bladder. Thus, option D is the best answer.
Source: Myschool Past Questions Archive (Record #59489)