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 basic point of impact by changes which produce mutation is the
Agametes
Bchromosomes
Cphenotype
Dzygote
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Question 2
jamb1998
The best explanation for the theories of natural selection is that
Aall organisms have equal capacity for survival in their habitats
Borganisms have varying capacities for survival in their habitats
Corganisms compete for resource and better competitors survive and thrive
Dhabitats allow only organisms that will not have to compete for survival
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Question 3
jamb1998
In the whistling pine, leaves are reduced to brown scales and young stems are green. This is an adaptation for
Aobtaining food
Bconserving nutrients
Cstoring water
Dreducing transpiration
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Question 4
jamb1998
In the honey bee colony, the drones are
Asterile males with reduced mouth parts
Bsterile males with well-developed mouth parts
Cfertile males with reduced mouth parts
Dfertile males with well-developed mouth parts
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Question 5
jamb1998
Toes of the feet ending in sharp, curved hook suitable for holding and tearing are most likely to belong to the bird with the bill in
AI
BII
CIII
DIV
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Question 6
jamb1998
The bird's bill adapted for fishing is labelled
AI
BII
CIII
DIV
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Question 7
jamb1998
The group of insects that have mouth parts adapted for both piercing and sucking is
Acockroach, aphids and mosquitoes
Baphids, houseflies and moths
Cmosquitoes, tse-tse flies and aphids
Daphids, beetles and grasshoppers
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Question 8
jamb1998
The biological association that contributes directly to succession in a community is
Acompetition
Bpredation
Cparasitism
Dcommensalism
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Question 9
jamb1998
A sex-linked character cannot be passed on directly from
Afather to son
Bmother to daughter
Cmother to son
Dfather to daughter
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Question 10
jamb1998
The correct increasing order of size for the cell components responsible for heredity is
Achromosome → DNA → nucleus → gene
BDNA → gene → chromosome → nucleus
Cchromosome → nucleus → DNA → gene
DDNA → gene → nucleus → chromosome
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Question 11
jamb1998
The phenotype of an individual can be summed up as the
Atotality of the expressed traits
Bindividual's physical appearance
Cindividual's entire genetical make-up
Dphysiological traits of individual
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Question 12
jamb1998
After one week of life, the weight of five chicks of the same sex hatched simultaneously from the eggs of the same hen and fed on the same diet were 45g, 40g, 35g, 33g and 30g. This is an example of
Agrowth rate
Bnatural selection
Cvariation
Dmutation
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Question 13
jamb1998
The line that represents efficient recycling combined with stringent conservation is
AIV
BIII
CII
DI
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Question 14
jamb1998
The unrestricted pattern is represented by
AI
BII
CIII
DIV
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Question 15
jamb1998
In blood transfusion, agglutination occurs when
Awhite blood cells from two individuals meet
Btwo different antibodies meet
Ctwo different antigens meet
Dcontrasting antigens and antibodies meet
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Question 16
jamb1998
One of the ways which body cells differ from gamete cells is in the
Atype of centromeres they contain
Bnumber of chromosomes pairs they contain
Ctype of chromatide they contain
Dnumber of chromosomes they contain
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Question 17
jamb1998
Which of the following groups of diseases are associated with water? I Onchocerciasis II Schistosomiasis III Dracunculiasis IV Elephantiasis V Taeniasis
AI, II and III
BII, IV and V
CII, III and IV
DI, II and V
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Question 18
jamb1998
Soil micro-organisms are beneficial because of their involvement in
Aphotosynthesis
Btranslocation
Ccycling of nutrients
Drespiration using soil air
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Question 19
jamb1998
The sequence of the biomes in Nigeria from port Harcourt to Damaturu is
