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Biology WAEC / WASSCE 1999 Variety of Organisms & Classification of Living Things
Which of the following is a means of measuring primary production?
A
Rate of reproduction of animals
B
Life span of an organism
C
Number of predators in an environment
D
harvested plants in a unit area
medium Difficulty
Biology WAEC / WASSCE 1999 Adaptation & Evolution
A situation whereby some mammals remain inactive throughout dry and hot seasons is known as
A
aestivation
B
dormancy
C
burrowing
D
incubation
medium Difficulty
Biology WAEC / WASSCE 1999 Basic Ecological Concepts, Ecosystems & Biomes
Which of the following factors may not affect living organisms in an aquatic habitat?
A
Turbidity
B
Temperature
C
Humidity
D
Light
medium Difficulty
Biology WAEC / WASSCE 1999 Growth, Micro-organisms & Public Health
Which of the following parasites is a flatworm?
A
Plasmodium
B
Trypanosoma
C
Ascaris
D
Schistosoma
medium Difficulty
Biology WAEC / WASSCE 1999 Nutrition in Plants & Animals (Photosynthesis & Food Substances)
During prolonged exercises, glucose in the muscle is convened to
A
pyruvic acid
B
lactic acid
C
co- enzyme
D
ethanol
medium Difficulty
Biology WAEC / WASSCE 1999 Variation & Genetics (Heredity)
Which of the following is an effect of carbon monoxide on man?
A
irritating the skin
B
Reducing oxygen carrying capacity of blood
C
Causing gene mutation
D
Destroying white blood cells.
medium Difficulty
Biology WAEC / WASSCE 1999 Variety of Organisms & Classification of Living Things
Which of the following is a renewable natural resources?
A
Air
B
Timber
C
Soil
D
Mineral
medium Difficulty
Biology WAEC / WASSCE 1999 Variety of Organisms & Classification of Living Things
Which of the following resources is competed for by organisms in the desert?
A
Light
B
Temperature
C
Oxygen
D
Water
medium Difficulty
Biology WAEC / WASSCE 1999 Variety of Organisms & Classification of Living Things
The major types of man’s finger prints do not include
A
arch
B
compound
C
simple
D
loop
medium Difficulty
Biology WAEC / WASSCE 1999 Variation & Genetics (Heredity)
Which of the following is an example of discontinuous variation?
A
Height of students
B
Complexion of beauty contestants
C
Blood groups of patients
D
Weight of weight lifters
medium Difficulty
Biology WAEC / WASSCE 1999 Variety of Organisms & Classification of Living Things
Which of the following statements is correct about variation?
A
Offsprings are different from their parents only
B
Offsprings from the same parents look alike
C
Offsprings differ from their ancestors but look like their immediate parents
D
offsprings differ from their ancestors and from each other
medium Difficulty
Biology WAEC / WASSCE 1999 Variation & Genetics (Heredity)
Which of the following statements about sex determination is correct? At fertility
A
the probability of male to female offspring is 1/2
B
the Y chromosome of the father decreases the probability of having a male child to 3/4
C
the xx chromosome of the mother decreases the probability of having a female child to 3/4
D
the vigour of either parents determines the sex of the offspring
medium Difficulty
Biology WAEC / WASSCE 1999 Adaptation & Evolution
The genotypic ratio of 1 : 2 : 1 in the offspring of a hybrid cross illustrates the law of
A
use and disuse
B
dominance
C
segregation
D
linkage
medium Difficulty
Biology WAEC / WASSCE 1999 Adaptation & Evolution
Which of the following scientists was involved with organic evolution?
A
Mendel
B
Larmarck
C
Morgan
D
Pasteur
medium Difficulty
Biology WAEC / WASSCE 1999 Variation & Genetics (Heredity)
Which of the following traits may not be important in marriage counselling
A
Sex-determination
B
Sickle-cell anaemia
C
Rhesus factor
D
Colour of skin
medium Difficulty
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