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Biology WAEC / WASSCE 2008 Variety of Organisms & Classification of Living Things
To avoid over fishing in a lake, the following measures may be helpful except
A
limiting fishing periods
B
regulating the size of nets
C
fishing throughout the year
D
fish breeding exercise
medium Difficulty
Biology WAEC / WASSCE 2008 Population Ecology, Habitats & Conservation
Conservation may be promote by
A
encouraging tree planting
B
systematic deforestation
C
overgrazing of pastures
D
unabated bush timing
medium Difficulty
Biology WAEC / WASSCE 2008 Basic Ecological Concepts, Ecosystems & Biomes
Which of the following substances is not recycled in an ecosystem?
A
Carbon
B
Energy
C
Water
D
Nitrogen
medium Difficulty
Biology WAEC / WASSCE 2008 Variety of Organisms & Classification of Living Things
Which of the following statements about phenylthiocarbamide (PTC) is not correct?
A
Some people BHG the taste of PTC to be bitter
B
Others find this substance to be tasteless
C
Ability to taste this chemical is inheritable
D
Ability to taste the chemical is hot inheritable
medium Difficulty
Biology WAEC / WASSCE 2008 Variation & Genetics (Heredity)
Which of the following characters is not an example of discontinuous variation?
A
Skin color
B
Fingerprint
C
Ability to roll tongue
D
Sex type
medium Difficulty
Biology WAEC / WASSCE 2008 Variation & Genetics (Heredity)
Which of the following human traits in a class of school children may give an approximate normal distribution curve when the variation is plotted?
A
Blood groups
B
Ear shapes
C
Sex distribution
D
Heights
medium Difficulty
Biology WAEC / WASSCE 2008 Variation & Genetics (Heredity)
The observable characteristics of an individual usually resulting from the interaction between the gene composition and the environment is referred to as
A
allele
B
genotype
C
phenotype
D
chromosome
medium Difficulty
Biology WAEC / WASSCE 2008 Variation & Genetics (Heredity)
The sudden change in a gene structure or chromosome number in an organism likely to cause an inheritable change in the phenotype is known as
A
migration
B
mutation
C
mitosis
D
meiosis
medium Difficulty
Biology WAEC / WASSCE 2008 Transport System in Plants & Animals
The effective cells involved in sickle-cell anaemia disease are
A
phagocytes
B
lymphocytes
C
erythrocytes
D
thrombocytes
medium Difficulty
Biology WAEC / WASSCE 2008 Nervous, Hormonal Coordination & Sense Organs
What does the chemical composition of the genetic material of all living organisms consist of?
A
Deoxyribonucleic acid
B
Adenosine diphosphate
C
Adenosine triphosphate
D
follicle stimulating hormone,
medium Difficulty
Biology WAEC / WASSCE 2008 Cell Structure, Organization & Cell Division
What of the following occurrences is not a feature of meiosis?
A
Formation of four haploid cells
B
Two successive nuclear cell division
C
Pairing of homologous chromosomes at prophase
D
Formation of two diploid cell
medium Difficulty
Biology WAEC / WASSCE 2008 Variation & Genetics (Heredity)
Which of the following diseases is commonly observed in human males and is sex-linked?
A
Beriberi
B
Down’s syndrome
C
Sickle-cell anaemia
D
colour blindness
medium Difficulty
Biology WAEC / WASSCE 2008 Adaptation & Evolution
The resemblance of a palatable insect to a poisonous insect is an example of
A
a chemical deterrent to a predator
B
an escape from the predator camouflage
C
an escape from the predator by mimicry
D
a defense against the predator by warming coloration
medium Difficulty
Biology WAEC / WASSCE 2008 Variation & Genetics (Heredity)
If red is dominant to white and homozygous red pea-plants are crossed with homozygous white pea-plants, the first filial generation will have
A
red flowers, 2 white flowers
B
4 red flowers
C
white flowers
D
4 pink flowers
medium Difficulty
Biology WAEC / WASSCE 2008 Adaptation & Evolution
Which of the following statements is not true of the worker termite? They
A
Build and repair nest
B
produce enzymes to digest cellulose
C
search for food to feed the colony
D
look after the nymph
medium Difficulty
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