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Which of these organelles is common to both plant
and animal cells?
AChloroplast
BCentriole
CMitochondrion
DPyrenoid
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Question 532
waec2006
The following life processes are common to both
plants and animals except
Arespiration
Bgrowth
Creproduction
Dphotosynthesis
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Question 533
waec2005
Which of the following is not an evidence of evolution?
AFossil records
BComparative embryology
CPolymorphism
DComparative anatomy
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Question 534
waec2005
A honey bee worker communicates with others on locating a source of food by
Adancing
Bstinging
Cinstinct
Dflares
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Question 535
waec2005
Territoriality is a phenomenon among
Alower organisms
Bplants of different species
Cmale animals with a group of females
Danimals and plants
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Question 536
waec2005
Which of the following organisms is a social insect?
AGrasshopper
BHoney bee
CButterfly
DHousefly
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Question 537
waec2005
Which of the following is not a correct base pairing on the DNA strand?
AAdenine, Thymine
BCytosine, Guanine
CGuanine, Cytosine
DUracil, Thymine
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Question 538
waec2005
In a living cell, factors which are responsible for inheritance are located
Aon the nuclear membrane
Bon the nucleolus
Con the chromosomes
Din the nucleoplasm
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Question 539
waec2005
Which disease is sex-linked and mainly afflicts male offspring?
ASickle cell anaemia
BHaemophilia
CDiabetes
DMalaria
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Question 540
waec2005
If two parents are sickle cell carriers then their genotypes would be
AHbA HbA and HbS HbS
B. HbS BbS and HbS BbS
CHbA HbS and HbA HbS
DHbA HbA and HbA HbA
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Question 541
waec2005
If the pink colour of a petal is dominant over white what would be the colour of the flower of the F generation when a pure pink flowered plant is crossed with a white flowered plant?
APurple
BPink
CWhite
DYellow
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Question 542
waec2005
A person with blood group B can only donate blood to individuals with blood groups
AA and B
BB and AB
CO only
DB only
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Question 543
waec2005
Which of the following is an example of physiological variation?
ABlood groups
BSkin colour
CFinger prints
DHuman height
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Question 544
waec2005
Variation which exhibits a wide range from one extreme to the other with very little difference between the intermediates is described as
Aphenotypic
Bdiscontinuous
Ccontinuous
Dgenotypic
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Question 545
waec2005
Which of the following statements about mutation is true?
AThe genotype is not affected
BThe genotype is affected
CThe phenotype is not affected
DIt cannot be induced by artificial means
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Question 546
waec2005
Which of the following is not a means of conservation?
AControlling excessive deforestation
BPrevention of poaching
CReplacing harvested mature trees with seedlings
DBurning of vegetation before cropping
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Question 547
waec2005
Conservation of wild life is necessary mainly because
Awild species cannot resist disease better than their domesticated species
Bmany predator wild animals help in control of pests
Cmany people derive pleasure from observing wild animals
Dit helps to prevent extinction of species
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Question 548
waec2005
Algal bloom depletes oxygen content of bodies of water polluted by
Aindustrial effluents
Bthermal plant discharge
Craw sewage disposal
Dcrude oil spillage
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Question 549
waec2005
Which of the following infections is unlikely to respond to antibiotic treatment?
ATyphoid fever
BRing worm
CMeasles
DTetanus
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Question 550
waec2005
The density-dependent factors that operate to regulate a population size may include the following except
