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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.

5,032 questions JAMB 2572 WAEC 2099 NECO 351 CUSTOM 10
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Past Questions

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Question 1 of 20 5,032 total questions
Question 301
waec 2021

The diagram above is an illustration of the growth of a plant in a water culture. After a few days, the solution turned green and the plant died. Use this to answer this question.

What precaution should have been taken to prevent the solution from turning green?

Ause a non-green plant for the experiment
Baerate the solution daily
Ccover the culture vessel with opaque paper
Dkeep cotton wool around the seedling to make it dry
View Explanation & Discuss
Question 302
waec 2021

An enzyme reaction may begin to decline when?

Athe optimum temperature is attained
Bthe ph of the medium is altered
Cthere is an increase in substrate concentration
Dthe atmospheric pressure is altered
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Question 303
waec 2021

Which of the following organisms does not undergo incomplete metamorphosis?

Alocust
Bgrasshopper
Cbutterfly
Dcockroach
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Question 304
waec 2021

How many gametes are produced in the pollen grain of a flowering plant before fertilization?

Aone
Btwo
Cthree
Dfour
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Question 305
waec 2021

The diagram above is an illustration of a type of eye defect in humans. Study it and answer this question.

The eye defect can be corrected by the use of?

Aconvex lens
Bconcave lens
Cbifocal lens
Dcylindrical lens
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Question 306
waec 2021

The diagram above is an illustration of a type of eye defect in humans. Study it and answer this question.

The eye defect illustrated in the diagram is?

Ahypermetropia
Bastigmatism
Cpresbyopia
Dmyopia
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Question 307
waec 2021

The temperature control centre in mammals is located in the?

Askin
Bhypothalamus
Cpituitary gland
Dadrenal gland
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Question 308
waec 2021

Which of the following hormones is suddenly secreted into the bloodstream of a frightened person?

Ainsulin
Badrenaline
Cthyroxine
Dparathormore
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Question 309
waec 2021

Detoxification of urea takes place in the?

Apancreas
Bheart
Cliver
Dtestes
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Question 310
waec 2021

The diagram above is an illustration of the longitudinal section of a mammalian organ. Study it and answer this question.

What is the main function of the organ?

AExcretion
BRespiration
CReproduction
DLocomotion
View Explanation & Discuss
Question 311
waec 2021

The diagram above is an illustration of the longitudinal section of a mammalian organ. Study it and answer this question.

Which of the labeled parts is the cortex?

AI
BII
CIII
DIV
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Question 312
waec 2021

The blood vessel which carries blood from the alimentary canal to the liver is the?

Ahepatic artery
Bhepatic vein
Chepatic portal vein
Dmesenteric artery
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Question 313
waec 2021

Radius and ulna are bones of the?

Apectoral girdle
Bupper arm
Cpelvic girdle
Dlower arm
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Question 314
waec 2021

Offspring formed by sexual reproduction exhibit more variation than those formed by asexual reproduction because 

Agreater amount of DNA is involved in sexual reproduction
Bgametes of parents have different genetic composition
Cgenetic materials come from parents of two different species
Dsexual reproduction is a lengthy process
View Explanation & Discuss
Question 315
waec 2021

A plant cell placed in a solution with a higher water potential will

Aexpand and then shrink
Benlarge and become turgid.
Cexpand and then burst
Ddecrease in size and become flaccid
View Explanation & Discuss
Question 316
waec 2021

The organism belongs to the Phylum

ARhizopoda
BCiliophora
CEuglenophyta
DRhodophyta
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Question 317
waec 2021

The level of organization of the organism is

Atissue
Bcell
Corgan
Dsystem
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Question 318
waec 2021

Which of the following statements about the structure labeled III is correct?

Asecretes digestive enzymes into the substrate
Babsorbs mineral salts from the soil
Cforms the root hairs of the organism
Ddevelops into stolon
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Question 319
waec 2021

The structure labeled II is the

Aspore
Bstolon
Ccolumella
Dsporangium
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Question 320
waec 2021

The structure labelled I is associated with

Asexual reproduction
Basexual reproduction
Cbud formation
Dgamete formation
View Explanation & Discuss
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