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Biology
WAEC / WASSCE 1991
Reproduction in Plants & Animals
The female part of a flower consist of the
A
stigma, style and ovary
B
petals, sepals and anthers
C
stigma, sepals and anthers
D
filaments, style and pollen grain
E
sepals, stigma and pollen grain
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 #15937)
Biology
WAEC / WASSCE 1991
Reproduction in Plants & Animals
Which of the following substance from the mother's blood diffuse through the placenta into the blood vessels of the feotus?
A
Carbon dioxide and oxygen
B
Glycogen and starch
C
Urea and carbon dioxide
D
Glucose and oxygen
E
Digested food and carbon dioxide
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 #15928)
Biology
WAEC / WASSCE 1991
Supporting Tissues & Skeletal System
Which of the following is not seen in the transverse section of a young monocotyledonous stem?
A
Parenchyma
B
Phloem
C
Xylem
D
Cambium
E
Sclerenchyma
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 #15929)
Biology
WAEC / WASSCE 1991
Variety of Organisms & Classification of Living Things
The bicuspid valve is located between
A
left auricle and left ventricle
B
right auricle and right ventricle
C
left and right ventricle
D
left and right auricle
E
left auricle and right ventricle
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 #15930)
Biology
WAEC / WASSCE 1991
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Solution
During which of the following processes is food for animals produced?
A
Photosynthesis
B
Respiration
C
Nutrition
D
Digestion
E
Transportation
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
Yes, photosynthesis is the process that produces food for animals by creating sugars that plants use to store energy. Animals eat plants or other animals that have eaten plants to get the food they need. Animals are heterotrophs because they depend on plants (Autotrophs) to feed. However, since green plants undergo the process of photosynthesis to manufacture their own food, just as animals need the green plants to feed. Indirectly, animals need photosynthesis in order to produce their own food. However, the Best option to the answer is option A.
Source: Myschool Past Questions Archive (Record #15931)
Biology
WAEC / WASSCE 1991
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Solution
Pellagra can be prevented by taking food rich in?
A
vitamin A
B
vitamin B
C
Vitamin D
D
calcium
E
iodine
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
Pellagra is due to a lack of the vitamin niacin and/or its precursor tryptophan, an essential amino acid.
Food sources of niacin and/or tryptophan include nutritional yeast, eggs, bran, peanuts, meat, poultry, fish with red meat, cereals (especially fortified cereals), legumes, and seeds.
Niacin, also known as nicotinic acid, is an organic compound and a form of vitamin B₃, an essential human nutrient.
Source: Myschool Past Questions Archive (Record #15932)
Biology
WAEC / WASSCE 1991
Basic Ecological Concepts, Ecosystems & Biomes
Puddles,ponds, rivers, lakes, seas and ocean are grouped together as
A
ecosystem
B
biosphere
C
terrestrial habitat
D
marine habitat
E
aquatic habitat
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 #15938)
Biology
WAEC / WASSCE 1991
Basic Ecological Concepts, Ecosystems & Biomes
Which of the following would be the primary producer in a food chain?
A
Saprophytes
B
Herbivores
C
Carnivores
D
Green plants
E
Parasites
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 #15939)
Biology
WAEC / WASSCE 1991
Variety of Organisms & Classification of Living Things
fewer number of trees is characteristic of the Savanna zones of Nigeria because
A
there is too much sunlight
B
there is limited amount of rainfall
C
they are usually exposed to grazing animals
D
they are covered by high mountains
E
the farmers always engage in bush-burning
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 #15940)
Biology
WAEC / WASSCE 1991
Basic Ecological Concepts, Ecosystems & Biomes
The number of individuals in a habitat in relation to the unit space available to each organism is referred to as the
A
birth rate
B
density
C
mortality
D
frequency
E
dispersion
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 #15941)
Biology
WAEC / WASSCE 1991
Variety of Organisms & Classification of Living Things
which of the following will be the effect of waterlogged top soil on the roots of plants?
A
the waterlogged soil will stimulate rapid growth of roots
B
there will be abundant supply of air for the growth of roots
C
The roots will absorb water i rapidly
D
There willl be an accumulation of plant nutrients
E
the roots will be starved of air
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 #15942)
Biology
WAEC / WASSCE 1991
Cell Structure, Organization & Cell Division
Which of the following is the unit of transmission of hereditary traits in living organisms
A
Nucleus
B
Nucleolus
C
Gametes
D
Genes
E
Chromosomes
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 #15943)
Biology
WAEC / WASSCE 1991
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
The role of dead organic matter in the soil is to
A
make the soil black
B
increase the mineral salt content
C
provide food for all living organisms
D
increase the acidity of soil
E
make the soil more porous
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 #15944)
Biology
WAEC / WASSCE 1991
Adaptation & Evolution
Species do not change in order to survive. The environment determines which organism survives to reproduce. These statements
A
explains theory of acquired characters
B
supports Jean Lamarck's theory of use and disuse
C
support the idea of survival of the fittest
D
are refuted by fossil record
E
imply that organisms modify their environment in order to survive
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 #15945)
Biology
WAEC / WASSCE 1991
Variety of Organisms & Classification of Living Things
Which of the following may not contribute to environmental pollution?
A
Solar energy radiation
B
Industrial waste
C
Waste disposal
D
Smoke
E
Nuclear power plant
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 #15946)