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Biology
WAEC / WASSCE 2005
Growth, Micro-organisms & Public Health
Which of the following organisms causes syphilis?
A
Mycobacterium tuberculosis
B
Bordetella pertusis
C
Treponema pallidlum
D
Clostridium tetani
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 #20768)
Biology
WAEC / WASSCE 2005
Respiration & Gaseous Exchange
Solution
In plant respiration occurs in
A
mesophyll cells only
B
the root only
C
the stomata and lenticel only
D
all living cells
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
Respiration in plants does not solely occur through stomata and lenticels. While these structures are important for gas exchange, every plant part, including leaves, stems, and roots, participates in respiration, albeit at different rates. Plants do not have specialized respiratory organs like humans, but they use their various parts for gaseous exchange.
Source: Myschool Past Questions Archive (Record #20769)
Biology
WAEC / WASSCE 2005
Respiration & Gaseous Exchange
A faster colour change of a dry cobalt chloride paper affixed to the lower surface of a leaf than the upper one, indicates that
A
sunlight slows down water loss from the upper surface
B
the lower surface of the leaf has more stomata
C
Sunlight causes the stomata on the upper surface to close
D
stomata are not present on the upper surface of a leaf
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 #20770)
Biology
WAEC / WASSCE 2005
Variety of Organisms & Classification of Living Things
Which of the following takes place when a person’s body temperature rises above 37oC
A
Sweating and vasoconstriction
B
Panting and vasoconstriction
C
Sweating and vasodilation
D
Panting and vasodilation
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 #20771)
Biology
WAEC / WASSCE 2005
Variety of Organisms & Classification of Living Things
Which of the following glands secretes a substance into the blood stream of a frightened person?
A
Adrenal glands
B
Salivary glands
C
Gastric glands
D
Parathyroid glands
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 #20772)
Biology
WAEC / WASSCE 2005
Nervous, Hormonal Coordination & Sense Organs
Solution
Reading the verdict of a case by a judge or magistrate is an example of
A
a reflex action
B
an instinct
C
a conditioned reflex
D
a voluntary action
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
The Cerebrum is known to majorly co-ordinate all the body's voluntary activities like learning, reasoning and intelligence
Source: Myschool Past Questions Archive (Record #20773)
Biology
WAEC / WASSCE 2005
Reproduction in Plants & Animals
Which of the following describes an example of fertilization in higher organisms?
A
Fusion of sperm and egg nuclei
B
Ejaculating of sperm into a female body
C
Male gametes germinating in the pollen tube
D
A pollen grain landing on a sticky stigma
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 #20774)
Biology
WAEC / WASSCE 2005
Variety of Organisms & Classification of Living Things
When both ovaries of the human female ovulate simultaneously and both ova are fertilized, then
A
identical twins are produced
B
fraternal twins are produced
C
Siamese twins are produced
D
the children produced are genetically identical
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 #20775)
Biology
WAEC / WASSCE 2005
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Solution
Which of the following statements is not true of the light stage of photosynthesis?
A
Chlorophyll is energized by sunlight
B
Water molecules split into hydrogen and hydroxyl ions
C
Carbon (IV) oxide is reduced by hydrogen atoms in NADPH2
D
Water is formed
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
Dark Reaction is the second step in the mechanism of photosynthesis.
The chemical processes of photosynthesis occurring independently of light are called dark reactions. It takes place in the stroma of the chloroplast.
Dark reactions of photosynthesis are chemical reactions that convert carbon dioxide and other compounds into glucose. So dark reaction is an enzymatic phase of photosynthesis.
Source: Myschool Past Questions Archive (Record #20777)
Biology
WAEC / WASSCE 2005
Variety of Organisms & Classification of Living Things
Which of the following elements is required in large amounts by plants
A
Molybdenum
B
Boron
C
Copper
D
Phosphorus
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 #20778)
Biology
WAEC / WASSCE 2005
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Solution
Which of the following substances has the highest amount of energy in joules per unit weight?
A
Carbohydrates
B
Proteins
C
Fats
D
Vitamins
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
Fats and ethanol have the greatest amount of food energy per mass, 37 and 29 kJ/g (8.8 and 6.9 kcal/g), respectively. Proteins and most carbohydrates have about 17 kJ/g (4 kcal/g)
Source: Myschool Past Questions Archive (Record #20779)
Biology
WAEC / WASSCE 2005
Digestive System & Feeding Mechanisms
Which of the following juices contains the enzyme ptyalin?
A
Gastric juice
B
Pancreatic juice
C
Succus
D
Saliva
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 #20782)
Biology
WAEC / WASSCE 2005
Transport System in Plants & Animals
Trees in savannah habitats usually have heavy thick bark which mainly
A
reduces the rate of transpiration
B
protect them from the scorching sun
C
protect them from heavy winds
D
resist bush tires
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 #20783)
Biology
WAEC / WASSCE 2005
Basic Ecological Concepts, Ecosystems & Biomes
In the marine food web, the source of energy to the producer comes from
A
sea waves
B
sea water
C
sun
D
air
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 #20784)
Biology
WAEC / WASSCE 2005
Variety of Organisms & Classification of Living Things
A population is best described as
A
a group of the same species of organisms living together
B
a group of animals and plants living together
C
a group of insects and grasses
D
different species of wild animals
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 #20785)