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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.

149 questions JAMB 2572 WAEC 2099 NECO 351 CUSTOM 10

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Past Questions

149 questions

Question 1 of 20 149 total questions

Question 31

waec 2009

which of the following organisms does not show colour adaptation to its environment?

AChameleon

BEarthworm

CFish

DToad

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Question 32

waec 2009

Food chains are relatively short because

Aof energy recycling in the ecosystem

Benergy gain at each trophic level is high.

Cof energy loss at each trophic level

Denergy flow in an ecosystem is uni-directional.

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Question 33

waec 2009

P → Q → R → S → T

Which of the following statements best describes the organism designated R? It

Afeeds on S

Bis a primary consumer

Cis a producer as well as a consumer

Dis a secondary consumer

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Question 34

waec 2009

P → Q → R → S → T

he organism designated P in the food chain above is normally sustained by energy from

Asunlight

Bcarbohydrates

Cgreen plants

Dmineral salts.

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Question 35

waec 2009

Which of the following organisms is a primary consumer?

ADog

BSheep

CGrass

DFungus

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Question 36

waec 2009

Which of the following statements is true about sandy soil? It

Ahas limited air space

Bis light and easy to dig

Cdrains slowly

Dis heavy and poorly aerated

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Question 37

waec 2009

Which of the following instruments is used to estimate the number of plants in a habitat?

APooter

BPitfall trap

CQuadrat

DSweep net

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Question 38

waec 2009

What is the critical limiting factor for plants below the photic zone is an aquatic ecosystem?

AAvailability of nutrients

BAvailability of water

CIntensity of light

DCarbon dioxide concentration

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Question 39

waec 2009

Which of the following statements about ecosystems is false?

AAll the energy entering the ecosystem is passed on to decomposers

BThe primary producers provide energy for herbivores and carnivores

CEcosystems must start with the capture of energy by autotrophs

DEnergy transfer from one trophic level to the other is not 100% efficient.

View Explanation & Discuss

Question 40

waec 2009

Which of the following organisms is an endoparasite?

AMice

BMosquito

CAscaris

DDodder

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Question 41

waec 2009

An organism whose source of carbon is inorganic is likely to be a/an

Aheterotrophic organism

Bautotrophic organism

Csymbiotic organism

Dparasitic organism

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Question 42

waec 2009

Pepsin is secreted as an inactive precursor called pepsinogen because

Apepsin as an enzyme is quickly destroyed by the alkaline food from the mouth

Ball digestive enzymes pass through a precursor stage

Cpepsin is a proteolytic enzyme and might attack the stomach tissues

Dpepsin is not required in large quantities

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Question 43

waec 2009

Which of the following treatments would increase the rate of transpiration in a potted plant?

APlacing it in a cold room

BPlacing it under a fan in a room

CPutting it in a cupboard

DSmearing grease on the lower surface of the leaves

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Question 44

waec 2009

The mesophyll layer of a leaf consists of

Awax and cutin

Bcells with lignified walls

Cirregularly shaped collenchyma cells.

Dphotosynthetic parenchyma cells.

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Question 45

waec 2009

Which of the following cycles involves the process of precipitation and transpiration?

AWater cycle

BCarbon cycle

CNitrogen cycle

DOxygen cycle

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Question 46

waec 2009

Which of the following processes removes carbon from the atmosphere?

APutrefaction

BPhotosynthesis

CVolcanic eruption

DBurning of fuels

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Question 47

waec 2009

A seed of a flowering plant can best be described as

Aradicle and plumule

Bthe developed ovule

Cthe embryo and endosperm

Ddeveloped ovary

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Question 48

waec 2009

Spectacles with convex lenses correct long-sightedness by

Aconverging the light rays before they enter the eye.

Bdiverging the light rays before they enter the eye.

Creducing light intensity before it enters the eye

Dincreasing light intensity before it enters the eye

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Question 49

waec 2009

The part of the ear which contains nerve cells sensitive to sound vibrations is the

Acochlea

Bampulla

Ctympanum

Dmalleus

View Explanation & Discuss

Question 50

waec 2009

The reason why hospitals use saline solutions as drip instead of water is

Abecause salt is a preservative

Bto prevent contamination of the body

Cto maintain the composition of the body fluids

Dto increase the number of blood cells

View Explanation & Discuss

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