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Biology Past Questions

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.

2,572 questions JAMB 2572 WAEC 2099 NECO 351 CUSTOM 10
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Past Questions

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Question 1 of 20 2,572 total questions
Question 471
jamb 2011

The crossing of individuals of the same species with different genetic characters is

Across breeding
Bpolygenic inheritance
Cnon-disjunction
Dinbreeding
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Question 472
jamb 2011
Which of the following theories was NOT considered by Darwin in his evolutionary theory?
AVariation
BSurvival of the fittest
CUse and disuse
DCompetition
View Explanation & Discuss
Question 473
jamb 2011

If the cross of a red-flowered plant with a white-flowered plant produces a pink-flowered plant, it is an example of

Acodominance
Bincomplete dominance
Cmutation
Dlinkage
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Question 474
jamb 2011
Lack of space in a population could lead to an increase in
Awater scarcity
Bbirth rate
Cdisease rate
Ddought
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Question 475
jamb 2011
The inheritable characters that are determined by a gene located on the X-chromosome is
Arecessive
Bsex-linked
Chomozygous
Ddominant
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Question 476
jamb 2011
In which of the following biomes is the south western part of Nigeria located?
ATemperate forest
BTropical rainforest
CTropical woodland
DDesert
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Question 477
jamb 2011

Millet , sorghum, maize and onions are common crops growth in Nigeria in the

Atropical rainforests
Bsudan savanna
Cmontane forests
Dsahel savanna
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Question 478
jamb 2011
Which of the following groups of environmental factors are density-dependent?
AFood, salinity, accumulation of matabolites and light
BTemperature, salinity predation and disease
CFood predation, disease and accumulation of metabolites
DTemperature food disease and light
View Explanation & Discuss
Question 479
jamb 2011
Drancunculiasis can be contacted through
Aeating contaminated food
Bdrinking contaminated water
Cbathing in contaminated water
Dbites of blackfly
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Question 480
jamb 2011
Habitats are generally classified into
Abiotic and abiotic
Baquatic and terrestrial
Caboreal and marine biomes
Dmicrohabitats and macrohabitats
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Question 481
jamb 2011
Exo-erythrocytic phase of the life cycle of malaria parasite occurs in the
Aliver of humans
Breticuloendothelial cells of humans
CMalphigian tubules of mosquito
Dbrain of humans
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Question 482
jamb 2011
Which of the following instruments is used to measure relative humidity?
AHydrometer
BThermometer
CHygrometer
DAnemometer
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Question 483
jamb 2011

The vector of the malaria parasite is

Afemale Aedes mosquito
Bfemale Anopheles mosquito
Cmale Culex mosquito
Dfemale Culex mosquito
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Question 484
jamb 2011
The interaction of a community of organisms with its abiotic environment constitutes
Aniche
Ba food chain
Can ecosystem
Da mirohabitat
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Question 485
jamb 2011

Which of the following is a feature of the population pyramid of a developing country?

Along lifespan
Blow birth rate
Clow death rate
Dshort lifespan
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Question 486
jamb 2011
An example of a filter -feeding animal is
Ashark
Bbutterfly
Cwhale
Dmosquito
View Explanation & Discuss
Question 487
jamb 2011
In an experiment to determine the percentage of humus and water in a soil sample, the following results were obtained
Weight of the evaporating basin al> Weight of basin and soil = 101.5g
Weight after drying the soil in the oven = 99.0g
Weight of basin and roasted soil = 95.5g
The percentage of humus in the soil sample is
A16.7%
B17.6%
C26.7%
D16.2%
View Explanation & Discuss
Question 488
jamb 2011

In nature, plants and animals are perpetually engaged in mutualism because

Athey are rivals
Ball animals rely on food produced by plants
Cthey utilize respiratory wastes of each other
Dthey are neighbours
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Question 489
jamb 2011
The type of asexual reproduction that is common to both Paramecium and protists is
Abudding
Bsporulation
Cfragmentation
Dfission
View Explanation & Discuss
Question 490
jamb 2011
The sequence of the one-way gaseous exchange mechanism in a fish is
Aoperculum → gills → mouth
Bgills → operculum → mouth
Cmouth → operculum → gils
Dmouth → gills → operculum
View Explanation & Discuss
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