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Biology
WAEC / WASSCE 2021
Reproduction in Plants & Animals
Diagram
The structure labelled I is associated with
Attached Figure / Diagram
A
sexual reproduction
B
asexual reproduction
C
bud formation
D
gamete formation
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 #62355)
Biology
WAEC / WASSCE 2021
Variety of Organisms & Classification of Living Things
Diagram
The structure labeled II is the
Attached Figure / Diagram
A
spore
B
stolon
C
columella
D
sporangium
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 #62356)
Biology
WAEC / WASSCE 2021
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Diagram
Which of the following statements about the structure labeled III is correct?
Attached Figure / Diagram
A
secretes digestive enzymes into the substrate
B
absorbs mineral salts from the soil
C
forms the root hairs of the organism
D
develops into stolon
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 #62357)
Biology
WAEC / WASSCE 2021
Variety of Organisms & Classification of Living Things
Diagram
The level of organization of the organism is
Attached Figure / Diagram
A
tissue
B
cell
C
organ
D
system
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 #62358)
Biology
WAEC / WASSCE 2021
Variety of Organisms & Classification of Living Things
Diagram
Solution
The organism belongs to the Phylum
Attached Figure / Diagram
A
Rhizopoda
B
Ciliophora
C
Euglenophyta
D
Rhodophyta
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
The organism in question is the euglena.
Euglena, is a genus of euglenoids, which is classified within the phylum Euglenozoa. While some older classifications placed them in the algal phylum Euglenophyta, the current consensus is Euglenozoa.
Source: Myschool Past Questions Archive (Record #62359)
Biology
WAEC / WASSCE 2021
Cell & Its Environment (Diffusion, Osmosis & Transport)
Solution
A plant cell placed in a solution with a higher water potential will
A
expand and then shrink
B
enlarge and become turgid.
C
expand and then burst
D
decrease in size and become flaccid
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
If a plant cell is placed in a solution with a higher water potential, it will absorb water by osmosis, causing the cell to swell and become turgid (firm and swollen) due to the pressure exerted on the cell wall by the incoming water.
Source: Myschool Past Questions Archive (Record #62360)
Biology
WAEC / WASSCE 2021
Reproduction in Plants & Animals
Offspring formed by sexual reproduction exhibit more variation than those formed by asexual reproduction because
A
greater amount of DNA is involved in sexual reproduction
B
gametes of parents have different genetic composition
C
genetic materials come from parents of two different species
D
sexual reproduction is a lengthy process
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 #62361)
Biology
WAEC / WASSCE 2021
Supporting Tissues & Skeletal System
Solution
Radius and ulna are bones of the?
A
pectoral girdle
B
upper arm
C
pelvic girdle
D
lower arm
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
Our forearm contains two long, parallel bones: the ulna and the radius. The ulna is the longer and larger of the two bones, residing on the medial (pinky finger) side of the forearm.
Source: Myschool Past Questions Archive (Record #62362)
Biology
WAEC / WASSCE 2021
Transport System in Plants & Animals
Solution
The blood vessel which carries blood from the alimentary canal to the liver is the?
A
hepatic artery
B
hepatic vein
C
hepatic portal vein
D
mesenteric artery
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
The portal vein or hepatic portal vein (HPV) is a blood vessel that carries blood from the gastrointestinal tract, gallbladder, pancreas and spleen to the liver. This blood contains nutrients and toxins extracted from digested contents.
Source: Myschool Past Questions Archive (Record #62363)
Biology
WAEC / WASSCE 2021
Variety of Organisms & Classification of Living Things
Diagram
The diagram above is an illustration of the longitudinal section of a mammalian organ. Study it and answer this question.
Which of the labeled parts is the cortex?
Attached Figure / Diagram
A
I
B
II
C
III
D
IV
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 #62366)
Biology
WAEC / WASSCE 2021
Excretion & Homeostasis
Diagram
The diagram above is an illustration of the longitudinal section of a mammalian organ. Study it and answer this question.
What is the main function of the organ?
Attached Figure / Diagram
A
Excretion
B
Respiration
C
Reproduction
D
Locomotion
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 #62367)
Biology
WAEC / WASSCE 2021
Excretion & Homeostasis
Detoxification of urea takes place in the?
A
pancreas
B
heart
C
liver
D
testes
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 #62368)
Biology
WAEC / WASSCE 2021
Nervous, Hormonal Coordination & Sense Organs
Which of the following hormones is suddenly secreted into the bloodstream of a frightened person?
A
insulin
B
adrenaline
C
thyroxine
D
parathormore
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 #62369)
Biology
WAEC / WASSCE 2021
Nervous, Hormonal Coordination & Sense Organs
The temperature control centre in mammals is located in the?
A
skin
B
hypothalamus
C
pituitary gland
D
adrenal gland
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 #62370)
Biology
WAEC / WASSCE 2021
Nervous, Hormonal Coordination & Sense Organs
Diagram
Solution
The diagram above is an illustration of a type of eye defect in humans. Study it and answer this question.
The eye defect illustrated in the diagram is?
Attached Figure / Diagram
A
hypermetropia
B
astigmatism
C
presbyopia
D
myopia
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
Myopia occurs when the shape of your eye causes light rays to bend (refract) incorrectly, focusing images in front of your retina instead of on your retina.
Source: Myschool Past Questions Archive (Record #62371)