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.
In the egg of a bird, the embryo is located in the
AYolk
BEmbryo disc IV
CChalaza
DAlbumen
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Question 2
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the inactive state exhibited by an animal during hot dry seasons is termed
AAestivation
BDormancy
CResting
DHibernation
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Question 3
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Which of the following requires the use of carbon dating to prove that evolution has occurred?
AComparative anatomy
BBiochemical similarities
Cmolecular records
DFossil records
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Question 4
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An example of cryptic colouration is the
AMottled colours on the moths that rest in lichens
Bbright colour of an insect pollinated flower
CGreen colour of a plant
DBright marks on poisonous tropical frog on veriegated leaves
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Question 5
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Spines and shells on animals are adaptation for
Acamouglage
Bchemical defence
Cphysical defence
Dmimicry
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Question 6
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The presence of sunken stomata and the folding of leaves are adaptations to
APrevent entry of pathogens
BReduce water loss
CRemove excess water
DPrevent guttation
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Question 7
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An argument against Lamarck's theory of evolution is that
Adisuse of body part cannot weaken the part
Bdisused part is dropped off in the offspring
Cacquired traits cannot be passed on to the offspring
Dtrait cannot be acquired through constant use of body parts
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Question 8
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An insect with a mandibulate mouth part will obtain its food by
Abiting and chewing
Bchewing and sucking
Cchewing
Dsucking
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Question 9
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The type of reproduction that leads to variation animal and plant population is
Abudding
Bsexual
Cvegetative
Dasexual
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Question 10
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A feature associated with the Y-chromosome in human is
Along eyelashes
Bprominent fingernails
Cfacial hairs
Denlarged breast
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Question 11
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An organism that has been extensively used to test the chromosomes theory of heredity is
ADrosophila melanogaster
BMuscar domestica
CZea mays
DHomo sapiens
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Question 12
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If the pair of alleles for baldness is given as Bb, a female carrier will be denoted by
AXbYB
BXBXB
CXBY
DXBbXb
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Question 13
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A man and his wife are both heterozyous for the sickle-cell trait. The likely percentage of their offspring that will be either carriers or sicklers is
A75%
B50%
C25%
D100%
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Question 14
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If a DNA strand has a base sequence TCA, its complementary strand must be
AATG
BTAG
CGAT
DAGT
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Question 15
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The pioneer organisms in ecological succession are usually the
Amosses
Blichens
Cferns
Dalgae
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Question 16
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Soil fertility can best be conserved by the activities of
AEarthworm
BMan
CRodent
DMicrobes
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Question 17
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A limited factor in a plant population near a chemical factory is likely to be
ALight
BHumidity
Cwind
DpH
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Question 18
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Mycorriza is an associationn between fungi and
Aprotozoans
BRoots of higher plants
CBacteria
DFilamentous algae
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Question 19
jamb2003
The correct sequence of biomes from northern to southern Nigeria is
