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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.

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Past Questions

100 questions

Question 1 of 20 100 total questions

Question 31

jamb 2016

The arrangement of ovules attached to the sides of a syncarpous ovary with a single chamber is referred to as

Afree-central placentation

Baxile placentation

Cparietal placentation

Dmarginal placentation

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Question 32

jamb 2016

The hereditary characters in plants and animals are located on the

Agene

Bmucleus

Cchromosome

Dcell

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Question 33

jamb 2016

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 34

jamb 2016

The rate of transpiration is NOT affected by

Athe weight of the stomata pores

Bhumidity

Ctemperature

Dthe size of the stomata pores

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Question 35

jamb 2016

Which of the following organs regulates the levels of water. salts, hydrogen ions, and urea in the mammals?

AKidney

BColon

CBladder

DLiver

View Explanation & Discuss

Question 36

jamb 2016

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 37

jamb 2016

The relationship between a termite and the protozoam in its intestine is described as

Apredation

Bsaproplytism

Csymbiosis

Dparasitism

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Question 38

jamb 2016

In the nitrogen cycle, the nitrates in the soil are converted to atmospheric nitrogen by

Aputerfying bacteria

Bnitrogen-fixing bacteria

Cnitrifying bacteria

Ddenitrifying bacteria

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Question 39

jamb 2016

The sequence of the one-way gaseous exchange mechanism in a fish is

Agills ⇢ operculum ⇢ mouth

Bmouth ⇢ gills ⇢ operculum

Cmouth ⇢ operculum ⇢ gills

Doperculum ⇢ mouth ⇢ gills

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Question 40

jamb 2016

The adaptive importance of the nuptial flight from termite colonies is to

Aensure cross-breeding between members of one colony and another

Bdisperse the reproductives in order to establish new colonies

Cprovide abundant food for birds and other animals during the early rains

Dexpel the reproductives so as to provide enough food for other members

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Question 41

jamb 2016

Seed plants are divided into

Amonocoty ledons and dicotyledons

Btracheophytes and ferns

Cangiosperms and gymnosperms

Dthallophytes and bryophytes

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Question 42

jamb 2016

The activity of ptyalin is likely to decrease with an increase in the concentration of

Aoxygen

Bstarch

Cprotein

Dacid

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Question 43

jamb 2016

The function of the red head in male Agama lizards is to

Ascare other males from the territory

Bwarn predators of the distastefulness of the animal

Cattract female lizards for mating purposes

Dconceal and camouflage the animal from predators

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Question 44

jamb 2016

The ability of chameleon to change its colour rapidly is an adaptation for

Aobtaining food

Battraction mate

Ccommunication

Descaping detection

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Question 45

jamb 2016

Which of the following can cause shrinkage of living cells?

ADeionized water

BHypotonic solution

CIsotonic solution

DHypertonic solution

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Question 46

jamb 2016

The movement response of a cockroach away from a light source is

Anegative phototaxism

Bpositive phototaxism

Cnegative phototropism

Dpostive phototropism

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Question 47

jamb 2016

The theory of natural selection was postulated by

AGregor Mendel

BMatthias Schleiden

CCharles Darwin

DRobert Hook

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Question 48

jamb 2016

The theory of use and disuse of organs was promulgated by

AAlfred Wallace

BCharles Darwin

CJean Lamarck

DRobert Hook

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Question 49

jamb 2016

A collection of population of all living organisms that exist in a habitat is referred to as

Aniche

Becosystem

Ccommunity

Denvironment

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Question 50

jamb 2016

The micro-organisms that causes Typhoid disease is

Atrypanosome gambiense

BSalmonella typhi

Centamoeba histolytica

Dplasmodium sp

View Explanation & Discuss

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