Study and practice Biology past questions with answers and detailed explanations. Then test your knowledge using our interactive CBT practice platform and prepare confidently for your upcoming examinations.
The property of clay soil that prevents it from supporting thick vegetation is its
Apossession of chemically weathered granite rocks
Binability to retain much water
Ctendency of becoming waterlogged
Dporosity and low water retention ability
Ehigh capillary spaces between the soil particles
View Explanation & Discuss
Question 2
waec1992
Lamarck's evolution theory could be summarised by the statement that
Aonly the fittest can survive in a challenging environment
Bspecies that are unable to adapt become extinct
Cnew characteristics do not arise in organisms in time of need
Dthe changing environment imposes structural physiological and behavioural changes in organisms
Ein a changing and unstable environment nature rejects the weak
View Explanation & Discuss
Question 3
waec1992
The swarming especially at the beginning of the rainy season is a courtship behaviour shown by
Amigratory birds
Bpigeons
Ccrickets
Dwinged termites
Ebees
View Explanation & Discuss
Question 4
waec1992
The division of labour in social insects is an example of
Astructural adaptation
Bphysiological adaptation
Ccommensalism
Dbehavioural adaptation
Ehormonal influence
View Explanation & Discuss
Question 5
waec1992
The changing of colour by a chameleon to that of the environment is an example of
Aadaptive radiation
Bprotective coloration
Ccourtship display
Ddisplay of body colour
Eterritorial behaviour
View Explanation & Discuss
Question 6
waec1992
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
View Explanation & Discuss
Question 7
waec1992
Which of the following is a function of the chromosome?
ATransmission of hereditary traits
BProtein synthesis
CExcretion
DEnergy production
EManufacture of enzyme
View Explanation & Discuss
Question 8
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
View Explanation & Discuss
Question 9
waec1992
The offspring produced when pure strains interbreed is descried as
Adominance
Bphenotype
Callele
Dgenotype
Ehybrid
View Explanation & Discuss
Question 10
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
View Explanation & Discuss
Question 11
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
View Explanation & Discuss
Question 12
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
View Explanation & Discuss
Question 13
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
View Explanation & Discuss
Question 14
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
View Explanation & Discuss
Question 15
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
View Explanation & Discuss
Question 16
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
View Explanation & Discuss
Question 17
waec1992
Which of the following substances cannot control the growth of harmful microoganisms?
AAntibiotics
BHypertonic salt solution
Cdisinfectants
Disotonic sugar solution
EAntiseptics
View Explanation & Discuss
Question 18
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
View Explanation & Discuss
Question 19
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
