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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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5,032 questions

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Question 971

waec 2009

A group of rats placed in an air-tight box for some hours died because they

Abreathed in air containing nitrogen.

Bproduced carbon dioxide

Cran short of energy

Dused up the available oxygen

View Explanation & Discuss

Question 972

waec 2009

Which of the following features is not characteristic of arteries? Arteries

Apossess valves at intervals throughout their length

Bhave thick, muscular and elastic walls

Ccarry blood away from the heart

Dtransport oxygenated blood with the exception of the pulmonary artery

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Question 973

waec 2009

The reason why the flow of blood through the capillaries is very slow is

Abecause the walls of capillaries are very thin

Bto avoid high blood pressure

Cto ensure that the individual does not get dizzy

Dto allow adequate time for exchange of materials.

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Question 974

waec 2009

Which of the following structures is not a skeletal material?

AChitin

BCartilage

CBone

DMuscle

View Explanation & Discuss

Question 975

waec 2009

The longest bone in the body is the

Ahumerus

Bfemur

Cscapula

Dtibia

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Question 976

waec 2009

The following statements about mitotic cell division are correct except that

Ait occurs only in young cells

Bit occurs In somatic cells

Cthe chromosome number of the daughter cell is the same as that of the parent

Dthe genetic composition of the mother cell is the same as that of the daughter cell.

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Question 977

waec 2009

Two organelles directly involved in mitotic cell division are

Anucleus and mitochondrion

Bribosome and nucleus.

Ccentriole and Golgi apparatus

Dnucleus and centriole

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Question 978

waec 2009

The curvature movement of plants in response to the stimulus of water is called

Ahydrotropism

Bgeotropism

Cphototropism

Dthigmotropism

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Question 979

waec 2009

Red blood cells were found to have burst open after being placed in distilled water for an hour. This phenomenon is known as

Aplasmolysis

Bdiffusion

Chaemolysis

Dwilting

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Question 980

waec 2009

In plant cells the role of the membrane is played by the

Anucleolus

Bcell wall

Ccytoplasm

Dmitochondrion

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Question 981

waec 2009

The experiment above is used to demonstrate the process of

Atranspiration

Bwater culture

Cdiffusion

Dosmosis

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Question 982

waec 2009

After an hour, the level of water in the thistle funnel will

Arise

Bfall

Cremain the same

Ddouble

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Question 983

waec 2009

The cytoplasm of the cell is considered a very important component because it

Aregulates the amount of energy in the cell

Bsuspends all cell organelles.

Cis the outermost part of the cell

Dis solely responsible for cell division

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Question 984

waec 2009

A beaker of pond water containing few specimens of Euglena was placed in a dark room for two weeks. At the end of this period, the specimens of Euglena were still alive because they were

Aable to carry out holozoic nutrition.

Bable to carry out photosynthesis using carbon dioxide in the pond water

Cbetter adapted to life in darkness than to life in light

Dnot overcrowded

View Explanation & Discuss

Question 985

waec 2009

Viruses are economically important because they?

Ado not have cell structures

Bcan only reproduce inside living cells.

Ccause diseases in plants and animals

Dexist as crystals outside living cells

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Question 986

waec 2009

A group of closely related organisms capable of interbreeding to produce fertile offspring are known as members of a

Akingdom

Bclass

Cfamily

Dspecies

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Question 987

jamb 2009

Chewing the cud is an adaptation peculiar to?

AHerbivores

BOmnivores

CRodents

DRuminants

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Question 988

jamb 2009

In the diagram, the function of the correcting lens is to?

Adiverge incoming rays

Bconverge incoming rays

Creflect incoming rays

Dscreen incoming rays

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Question 989

jamb 2009

In the diagram, the eye defect illustrated is?

Amyopia

Bhypermetropia

Castigmaism

Dcataract

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Question 990

jamb 2009

In the diagram, the likely pollinating agent of the flower is?

Awind

Bwater

Cinsect

Dman

View Explanation & Discuss

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