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Biology
WAEC / WASSCE 2011
Variety of Organisms & Classification of Living Things
A monocot root IS different from a dicot root by having
A
endodermis
B
cambium
C
wide pith
D
root hair.
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 #21555)
Biology
WAEC / WASSCE 2011
Transport System in Plants & Animals
Which of the following statements best describes haemoglobin? It is
A
yellowish in colour
B
a red blood cell
C
an oxygen carrying pigment
D
needed for blood clotting
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 #21556)
Biology
WAEC / WASSCE 2011
Respiration & Gaseous Exchange
Inhaled air is made warm and moist in the
A
epiglottis
B
nasal cavity
C
trachea
D
mouth
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 #21557)
Biology
WAEC / WASSCE 2011
Digestive System & Feeding Mechanisms
Which of the following structures is not involve in respiration?
A
Lung books
B
Mouth
C
Stomach
D
Trachea
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 #21558)
Biology
WAEC / WASSCE 2011
Variety of Organisms & Classification of Living Things
In which of the following habitats is Paramecium no found
A
Pond
B
Aquarium
C
Lake
D
Puddle
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 #21549)
Biology
WAEC / WASSCE 2011
Cell & Its Environment (Diffusion, Osmosis & Transport)
Solution
The following processes are involved in water movement in the endodermis except
A
osmosis
B
vascuolar pathway
C
diffusion
D
active transport
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
Active transport requires energy(ATP) to move molecules against their concentration gradient.Hence it is not directly involved in water movement in the endodermis. Despite the fact that it is important in moving ions and other solutes across endodermal cells, water movement itself is primarily driven by osmosis and diffusion which are passive processes.
In other words, osmosis, diffusion and vascuolar pathway are involved in water movement in the endodermis.
Source: Myschool Past Questions Archive (Record #21550)
Biology
WAEC / WASSCE 2011
Cell Structure, Organization & Cell Division
Cells that utilise a lot of energy are characterized by the presence of a large number of
A
vacuoles
B
mitochondria
C
endoplasmic reticulum
D
ribosomes
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 #21551)
Biology
WAEC / WASSCE 2011
Cell Structure, Organization & Cell Division
Diagram
The part labelled II in the diagram is
Attached Figure / Diagram
A
centriole
B
chloroplast
C
chromatid
D
tonoplast
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 #21552)
Biology
WAEC / WASSCE 2011
Cell Structure, Organization & Cell Division
Diagram
The part labelled I is called the
Attached Figure / Diagram
A
nucleolus
B
centromere
C
centriole
D
spindle
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 #21553)
Biology
WAEC / WASSCE 2011
Excretion & Homeostasis
Filtrate in the Bowman’s capsule contains vitamins because
A
only all le amount is required by the body
B
they can be reabsorbed into the blood
C
they have low molecular weight
D
most of them are fat soluble.
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 #21559)
Biology
WAEC / WASSCE 2011
Respiration & Gaseous Exchange
ore sweat is produced during muscular exercise because
A
the contracting muscles produce water
B
fermentation occurs in muscles
C
the temperature of the body rises
D
the muscle fatigues
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 #21560)
Biology
WAEC / WASSCE 2011
Nervous, Hormonal Coordination & Sense Organs
Solution
Which of the following neurons may not have myelin sheath?
A
Effector cells
B
Intermediate neurons
C
Motor neurons
D
Sensory neurons
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
Myelin sheaths are typically found surrounding the axons of sensory and motor neurons, which are responsible for transmitting signals over long distances. Intermediate neurons, also known as interneurons, are typically involved in the local processing of signals within the central nervous system and may not require myelin sheaths since they transmit signals over shorter distances.
Source: Myschool Past Questions Archive (Record #21561)
Biology
WAEC / WASSCE 2011
Growth, Micro-organisms & Public Health
Solution
Which of the following is not an effector organ?
A
Tongue
B
Skin
C
Nose bridge
D
Ear glands
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
Effector organs are organs that respond to signal from the nervous system.
The tongue contains muscles that allows it to move and change shape in response to signals from the nervous system as it can move food around in the mouth during chewing.
The skin also responds to various stimuli such as temperature changes, pain, touch or pressure. So, it is an effector organ.
The ear glands are also effector organs as they produce earwax in response to the nervous system.The cerumen(ear wax) help protect the ear canal by trapping dirts, bacteria and other small particles.
Conversely, the nose bridge is not an effector organ because it is only a structural part of the nose which provides support and shape. It doesn't have the ability to respond to stimulus from the nervous system or perform any specific function in response to stimuli.
Source: Myschool Past Questions Archive (Record #21562)
Biology
WAEC / WASSCE 2011
Variety of Organisms & Classification of Living Things
During sexual reproduction in Paramecium, how many times does the zygote divide to produce eight nuclei?
A
1
B
2
C
3
D
4
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 #21563)
Biology
WAEC / WASSCE 2011
Reproduction in Plants & Animals
The testes in male mammals descend into the scrotal sac because
A
there is congestion in the lower abdomen
B
they run the risk of being destroyed
C
they need special support
D
they require a relatively low temperature
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 #21701)