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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.

116 questions JAMB 2572 WAEC 2099 NECO 351 CUSTOM 10

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Past Questions

116 questions

Question 1 of 20 116 total questions

Question 11

waec 2015

Soil erosion could be prevented by

Aflooding a farmland

Bcover-cropping

Cdeforestation

Dleaving the soil bare

View Explanation & Discuss

Question 12

waec 2015

Which of the following resources is non-renewable?

AForest reserve

BMineral deposit

CWater

DWild life

View Explanation & Discuss

Question 13

waec 2015

Which of the following natural resources is most readily available to all organisms?

AOil

BWater

CAir

DFood

View Explanation & Discuss

Question 14

waec 2015

Oil applied to the surface of water kills the larvae of mosquitoes through

Adehydration

Bpoisoning

Cstarvation

DSuffocation

View Explanation & Discuss

Question 15

waec 2015

Which of the following organisms is an endo-parasite?

ATapeworm

BFlea

CTick

DAphid

View Explanation & Discuss

Question 16

waec 2015

Which of the following organisms is an endo-parasite?

ATapeworm

BFlea

CTick

DAphid

View Explanation & Discuss

Question 17

waec 2015

Study the diagram above and answer the question

The structure labelled I is

Aa pitcher

Ban onion

Ca flower

Da tendril

View Explanation & Discuss

Question 18

waec 2015

Which of the following components make up an ecosystem?

ADecomposers, animals and non-living factors

BLiving and non-living factors

CPlants and non-living factors

DPlants decomposers and non-living factors

View Explanation & Discuss

Question 19

waec 2015

A community reaches a climax when

Aonly pioneer organisms are present

Bnew habitats are constantly being formed

Cthere is an introduction of new plants and animal species within the community

Dthe composition and size of a community remains constant over a long period

View Explanation & Discuss

Question 20

waec 2015

A person suffering from obstruction of the bile duct is advised not to eat fats and oil because

Abile digests fats and oil

Bfats and oil can only be absorbed whenbile is absent

Cbile emulsifies fat and oil

Dbile adds water to digesting food

View Explanation & Discuss

Question 21

waec 2015

Which of the following organs of the alimentary canal is not correctly matched with its function?

AGall bladder- stores bile

BLiver - stores glycogen

CAppendix - releases enzymes

DTeeth = grind food

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Question 22

waec 2015

A student used the following step in testing for a non-reducing sugar.
I. added Benedict's solution to the sugar solution
II. added dilute hydrochloric acid to the sugar solution and boiled it
III. added sodium hydroxide solution to the solution in II and boiled;
IV. added Benedict's solution to the cooled solution in III.

The colour change to be observed in step IV is

Ablue-black

Bbrick-red

Cpurple

Dviolet

View Explanation & Discuss

Question 23

waec 2015

A student used the following steps in testing for a non-reducing sugar.

I. added Benedict's solution to the sugar solution

ll. added dilute hydrochloric acid to the sugar and boiled it;

lll. added sodium hydroxide solution to the solution in ll. and boiled;

IV. added Benedict's solution to the cooled solution in lll.

Use this information above to answer the question.

What is the importance of step ll in the testing process? To

Aneutralize the sugar solution

Bsoften the sugar solution

Cchange the colour of the sugar solution

Dincrease the acid content of the sugar solution

View Explanation & Discuss

Question 24

waec 2015

A student used the following steps in testing for a non-reducing sugar.

I. added Benedict's solution to the sugar solution

ll. added dilute hydrochloric acid to the sugar and boiled it;

lll. added sodium hydroxide solution to the solution in ll. and boiled;

IV. added Benedict's solution to the cooled solution in lll.

Use this information above to answer the question.

Why did the student add the dilute hydrochloric acid to the sugar solution in step ll? To

Aoxidize the sugar solution

Bhydrolyse the sugar solution

Cdry the sugar solution

Dincrease the volume of the sugar solution

View Explanation & Discuss

Question 25

waec 2015

The main difference between a seed and a fruit is that a fruit

Ais large while a seed is small

Bhas two scars while a seed is has one

Cis pigmented while a seed is not

Dcan be dispersed by animals while a seed cannot

View Explanation & Discuss

Question 26

waec 2015

Which of the following characteristic features is not associated with monocotyledonous plants?

AWell differentiated sepals and petals

BPresence of fibrous root system

CPresence of narrow leaves

DFlora parts are in multiples of three

View Explanation & Discuss

Question 27

waec 2015

Which of the following processes removes carbon (IV) oxide from the atmosphere?

ABurning fuels

BPutrefaction

CPhotosynthesis

DRespiration in plants

View Explanation & Discuss

Question 28

waec 2015

Ability of the human eye to focus images accurately on the retina is called

Aastigmatism

Bmyopia

Cadjustment

Daccommodation

View Explanation & Discuss

Question 29

waec 2015

A person had an accident that affected the skull but not the nose and later lost the sense of smell. The accident must have a affected the

Anose by extension

Bolfactory lobes of the brain

Cpassage from the nose to the brain

Dpart of the skull near the nose

View Explanation & Discuss

Question 30

waec 2015

A farmer who wants to keep seeds for three years before planting and wants to prevent them from sprouting uses

Aauxin

Bgibberellins

Cabscisin

Dcytokinins

View Explanation & Discuss

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