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Which of the following does not illustrate adaptation to the environment ?
AColour chanages by chameleon
BStreamline shape of fishes
CLight bones in birds
DDevelopment of big muscies by a weight lifter
EPossession of fins by fishes
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Question 912
waec1992
Which of the following is a function of the chromosome?
ATransmission of hereditary traits
BProtein synthesis
CExcretion
DEnergy production
EManufacture of enzyme
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Question 913
waec1992
Which of the following diseases or disorders can be prevented by the application of the knowledge of heredity through marriage counseling ?
ASickle cell anaemia
BHaemophilia
CDiabetes mellitus
DColour blindness
ERiver blindness
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Question 914
waec1992
The offspring produced when pure strains interbreed is descried as
Adominance
Bphenotype
Callele
Dgenotype
Ehybrid
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Question 915
waec1992
Identical twins inherit their genes from
Athe same ovum and different sperms
Bthe same sperm and different ova
Cdifferent sperms and many ova
Dthe same ovum and the same sperm
Emany ova and many sperms
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Question 916
waec1992
One of the major criticisms against Mendelian laws is that they do not recognise that
Aone trait is often controlled by many pairs of genes
Bsingle factor inheritance is never a reality
Ccomplete dominance is always possible
Dincomplete dominance is not possible
Ehybrids exist in living organisms
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Question 917
waec1992
One of the factors that must be considered for sate blood transfusion is
Asocial class of the donor
Bage of the recipient
Crhesus factors of the donor and the recipient
Dnationality of the donor
Eweight of the recipient
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Question 918
waec1992
The table below indicates the result of an experiment during which grains of different colours in two maize cobs were counted
Maize Cob Colours of Maize Grains
White Pink Red
l. 30 60 30
II. 50 99 49
Which of the following ratios agrees with the result?
A9:3:3
B1:2:1
C1:3:1
D2:1:1
E2:3:2
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Question 919
waec1992
The largest game reserve in Nigeria is the
AKainji Game Reserve in Niger State
BZamfara Forest Reserve in Sokoto State
CYankari Game Reserve in Bauchi State
DBorgu Game Reserve in Niger State
EOban Hills Game Reserve in Cross River State
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Question 920
waec1992
The following agencies are responsible for conservation in Nigeria except
AForestry Department
BNigerian Conservation Society
CGames Reserve Authority
DNigerian Red Cross Society
EMinistry of Agriculture and Natural Resources
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Question 921
waec1992
Which of the following is the underling principle in the adoption of biological control of pests?
AKnowledge of agricultural practices by the farmer
Brelationship between plants and animals
Cthe presence of poisonous chemicals in the farm
Dthe relative population of plants and animals in the farm
EThe predator-prey relationship in the ecological community
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Question 922
waec1992
Which of the following substances cannot control the growth of harmful microoganisms?
AAntibiotics
BHypertonic salt solution
Cdisinfectants
Disotonic sugar solution
EAntiseptics
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Question 923
waec1992
The use of predators or parasites to control pests in the farm is known as
Apredator control
Bchemical control
Cbiological control
Danimal control
Eparasitic control
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Question 924
waec1992
Which of the following is not a characteristic of overcrowding in plant and animal community?
APopulation outstripping available space
BPopulation exceeding available food
CCompetition within the population
Dincrease in primary production
Epopulation increasing at the same rate as the bith rate
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Question 925
waec1992
A climax community is characterised by
Aa stable composition of plant and animal species
Brapid changes in the composition of species
Cconstant changes in appearance of the habitat
Ddifferent species occurring at different times
Egradual change in animal population
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Question 926
waec1992
Which of the following is not an adaptation of plants or animals to desert environment?
AWell developed tap root system
BSmall leaves with thick epidermis
CStems with spike-like leaves
DMetabolic waste in the form of uric acid in some animals
Ebroad leaves for storage
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Question 927
waec1992
Which of the following is not an adaptation of plants or animals to desert environment?
AWell developed tap root system
Bsmall leaves with thick epidermis
CStems with spike-like leaves
DMetabolic waste in the form of uric acid in some animals
EBroad leaves for storage
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Question 928
waec1992
In which of the following processes is carbondioxide not given out?
Arespiration in plants
Bdecay of organism
Cburning of organic matter
Dburning of fuels
Eduring photosynthesis
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Question 929
waec1992
Which of the following explains the term pyramid of numbers?
Athe number of organisms in a trophic level
Bthe relationship between plants in different trophic levels
Cthe number of saprophytes and parasites in a habitat
Dthe number of predators in a habitat
Eprogressive decrease in the number of individuals from lower to higher trophic level
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Question 930
waec1992
The following are features of Northern Guinea Savanna except
