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Biology Past Questions

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

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5,032 questions

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Question 961

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 962

waec 2009

Which of the following organisms is a primary consumer?

ADog

BSheep

CGrass

DFungus

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Question 963

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 964

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 965

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 966

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.

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Question 967

waec 2009

Which of the following organisms is an endoparasite?

AMice

BMosquito

CAscaris

DDodder

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Question 968

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 969

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

View Explanation & Discuss

Question 970

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 971

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 972

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 973

waec 2009

Which of the following processes removes carbon from the atmosphere?

APutrefaction

BPhotosynthesis

CVolcanic eruption

DBurning of fuels

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Question 974

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 975

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 976

waec 2009

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

Acochlea

Bampulla

Ctympanum

Dmalleus

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Question 977

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

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Question 978

waec 2009

What physiological term can he used to
describe the regulation of the body
temperature of the lizard? '

AHomeostasis

BHomoithermy

CPoikilothermy

DOsmoregulation

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Question 979

waec 2009

Which of the statements below is valid?

AThe bird’s blood was always warmer than that of the lizard

BThe body temperature of the bird varied less than that of the lizard during changes in environmental temperature

CThe body temperature of the bird remained constant despite changes in environmental temperature

DThe body temperature of the lizard was always close to that of the environmental temperature

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Question 980

waec 2009

Which of the following organisms have kidney as their excretory organ?

AFishes, amphibians, birds, man.

BFishes, amphibians, annelids, insects

CFishes, reptiles, birds, tapeworms

DFishes, protozoans, amphibians, man

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