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Biology WAEC / WASSCE 1993 Adaptation & Evolution
Which of the following is not an adaptation of plants or animals to desert environment?
A
Well developed tap root system
B
Small leaves with thick Epidermis
C
Stems with spike-like leaves
D
Metabolic waste in the form of uric acid in some animals
E
Broad leaves for storage
medium Difficulty
Biology WAEC / WASSCE 1993 Population Ecology, Habitats & Conservation
A climax community is characterised by
A
a stable composition of plant and animal species
B
rapid changes in the composition of species
C
constant changes in appearance of the habitat
D
different species occurring at different times
E
gradual change in animal population
medium Difficulty
Biology WAEC / WASSCE 1993 Population Ecology, Habitats & Conservation
Which of the following is not a characteristic of overcrowding in plant and animal community?
A
Population outstripping available space
B
Population exceeding available food
C
Competition within the population
D
increase in primary production
E
Population increasing at the same rate as the birth rate
medium Difficulty
Biology WAEC / WASSCE 1993 Nutrition in Plants & Animals (Photosynthesis & Food Substances)
The use of predators or parasites to control pests in the farm is known as
A
predator control
B
chemical control
C
biological control
D
animal control
E
parasitic control
medium Difficulty
Biology WAEC / WASSCE 1993 Cell & Its Environment (Diffusion, Osmosis & Transport)
Which of the following substances cannot control the growth of harmful micro organisms?
A
Antibiotics
B
Hypertonic salt solution
C
Disinfectants
D
isotonic sugar solution
E
Antiseptics.
medium Difficulty
Biology WAEC / WASSCE 1993 Population Ecology, Habitats & Conservation
Which of the following is the underlining Principle in the adoption of biological control of pests?
A
Knowledge of agricultural practices by the farmer
B
Relationship between plants and animals
C
The presence of poisonous chemicals in the farm
D
The relative population of plants and animals in the farm
E
The predator prey relationship in ecological community
medium Difficulty
Biology WAEC / WASSCE 1993 Population Ecology, Habitats & Conservation
The largest game reserve in Nigeria is the
A
Kianji game reserve in Niger state
B
Zamfara Forest Reserve In Sokoto state
C
Yankari game reserve in Bauchi state
D
Borgu park reserve in Niger state
E
Oban hill Game reserve in Cross River state
medium Difficulty
Biology WAEC / WASSCE 1993 Population Ecology, Habitats & Conservation
The following agencies are responsible for conservation of in Nigeria except
A
Forest department
B
Nigerian conservation society
C
Games reserve authority
D
Nigerian red cross society
E
Ministry of agriculture and Natural resources
medium Difficulty
Biology WAEC / WASSCE 1993 Variety of Organisms & Classification of Living Things
The table below indicates the result of an experiment during which grains of different colours in two maize cobs were counted Maize cob White Pink Red I 30 60 30 II 50 99 49 Which of the following ratios agrees with the result?
A
9:3:3
B
1:2:1
C
1:3:1
D
2:1:1
E
2:3:2
medium Difficulty
Biology WAEC / WASSCE 1993 Reproduction in Plants & Animals
The function of the part labelled l is to
Attached Figure / Diagram
Question diagram
A
receive pollen grains
B
produce nectar
C
store the pollen grains
D
store the ovules
E
produce the male gametes
medium Difficulty
Biology WAEC / WASSCE 1993 Reproduction in Plants & Animals
How would you describe the position of the ovary in relation to the receptacle?
Attached Figure / Diagram
Question diagram
A
Superior
B
lnferior
C
Semi-inferior
D
Gamosepalous
E
Polysepalous
medium Difficulty
Biology WAEC / WASSCE 1993 Nervous, Hormonal Coordination & Sense Organs
The parts labelled IV, V and VI respectively are the
Attached Figure / Diagram
Question diagram
A
ciliary body, optic nerve and yellow spot
B
. blind spot, optic nerve and suspensory ligament
C
vitreous humour, yellow spot and optic nerve
D
blind spot, optic nerve and pupil
E
yellow spot, retina and choroid layer
medium Difficulty
Biology WAEC / WASSCE 1993 Variety of Organisms & Classification of Living Things
The light ray entering the eye goes through the following route
Attached Figure / Diagram
Question diagram
A
II, III, I, IV, V
B
II, I, VII, III
C
II, I, III, IV
D
V, VI, III, I
E
I, VII, III, IV, V
medium Difficulty
Biology WAEC / WASSCE 1993 Nervous, Hormonal Coordination & Sense Organs
Which of the following structures are adjusted in focusing the image of a distant or near object on the retina?
Attached Figure / Diagram
Question diagram
A
I and II
B
II and III
C
III and VII
D
IV and V
E
V and VII
medium Difficulty
Biology WAEC / WASSCE 1993 Variation & Genetics (Heredity)
One of the factors that must be considered for safe blood transfusion is
A
social class of the donor
B
age of the recipient
C
rhesus factors of the donor and the recipient
D
nationality of the donor
E
weight of the recipient
medium Difficulty
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