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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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2,572 questions

Question 1 of 20 2,572 total questions

Question 811

jamb 1998

The structure labelled I is formed as a result of the fusion of

Atwo pairs of nuclei

Bseveral pairs of nuclei

Ca pair of nuclei

Dtwo pairs of nucleoli

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Question 812

jamb 1998

In snails, the hard calcareous shells are secreted by the

Aradula

Bctenidium

Cpneumostome

Dmantle

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Question 813

jamb 1998

The natural tendency of organisms as they evolve is to

Adecrease in size

Bincrease in number

Cdevelop specialize structure

Dfeed indiscriminately

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Question 814

jamb 1998

The procaryotic cell type is characterized by a

Acomplex cytoplasm in which different regions are poorly defined

Blocalization of different regions of the cell into tissues

Ccollection of organelles and macromolecular complexes

Dsimple cytoplasm with well defined regions

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Question 815

jamb 1998

The nucleus is considered the central organelle of a cell because it

Acontains the genetic material

Bcontains the nuclear sap

Cis bounded by the nuclear membrane

Dis located at the center of the cell

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Question 816

jamb 1997

Water loss is regulated in plants and animals by both the

Ascales and the skin

Bscales and the hair

Cthick leaves and the feathers

Dleathery cuticle and the feathers

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Question 817

jamb 1997

Long neck in giraffe is used to illustrate the theory of

Ause and disuse

Borigin of species

Corigin of life

Dnatural selection

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Question 818

jamb 1997

Fossil records found in sedimentary rocks offer some explanation for the theory of evolution because

Athe deposits have remains of organisms characteristic of when they were formed

Bdifferent strata have remains of organisms of the same kind

Conly organisms with strong parts are fossilized

Dmost animal and plant fossils bear little resemblance to present day living specimens

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Question 819

jamb 1997

What combination of character should a prey develop to survive the environment of its predator?

ACamouflag, well developed limbs and effective vision

BShowy colour, big body and well developed limbs

CCamouflage, big body and effective vision

DShowy colour, well developed muscles and an acute sense of smell

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Question 820

jamb 1997

Which of the following characters is NOT sex-linked?

AAlbinism

BBaldness

CHaemophilia

DColour blindness

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Question 821

jamb 1997

The homozygous condition HbsHbsresults in sickle cell anaemia whereas HbAHbs has the sickling trait. What is the probability that a couple with the sickling trait will give birth to one normal child?

A1/2

B1/4

C1/8

Dnone

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Question 822

jamb 1997

One reason for the success of Mendel's work is that he

Awas the first to carry out research work on modern genetics

Bintroduced quantitative and qualitative elements into his work

Cselected two characteristics only at a time for study

Ddrew up his laws of inheritance based on his knowledge of chromosomes

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Question 823

jamb 1997

During binary fission in lower organisms, the nucleus is known to undergo

Amitosis

Bmeiosis

Cfragmentation

Dmutation

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Question 824

jamb 1997

One of the most effective ways of controlling guinea worm is by

Atreating the disease

Bpublic enlightenment campaigns

Caccelerating rural developmnet

Dprovision of portable drinking water

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Question 825

jamb 1997

Which is the most important pollutant of the marine environment in Nigeria?

AInsecticides

BSewage

COil

DInorganic fertilizers

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Question 826

jamb 1997

In a soil sample, the relative amouunts of the different soil particles can best be determined by the process of

Afiltration

Bcentrifugation

Cprecipitation

Dsedimentation

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Question 827

jamb 1997

After a heavy rainfall and the formation of a large pond, the most likely sequence of changes in the vegetation of the pond is

AEuglena → water lily → Spirogyra → grass

Bwater lily → Spirogyra →grass → Euglena

CSpirogyra → Euglena → grass → water lily

DEuglena → Spirogyra → water lily → grass

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Question 828

jamb 1997

The Southern Guinea Savanna differs from the Northern Guinea Savanna in that it has

Alower rainfall and shorter grasses

Bless grasses and scattered trees

Cmore rainfall and taller grasses

Dless arboreal and burrowing animals

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Question 829

jamb 1997

Adaptive features of plants to desert conditions include?

Athick barks, succulent stems and sunken stomata

Bthin barks, succulent stems and sunken stomata

Cthin barks, air floats on stems and sunken stomata

Dair spaces in tissues, adventitious roots and thick barks

View Explanation & Discuss

Question 830

jamb 1997

Toads and lizards in an ecosystem depend on a limited quantity of food. This is an example of

Aparasitism

Bintraspecific competition

Cpredation

Dinterspecific competition

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