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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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5,032 questions

Question 1 of 20 5,032 total questions

Question 11

waec 2025

The diagram above is an illustration of an ecological instrument used in a habitat. Study it and answer question below.

The instrument is used to measure a factor

Ain the atmosphere

Bin water

Con land

Don grass

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Question 12

waec 2025

The diagram above is an illustration of an ecological instrument used in a habitat. Study it and answer question below.

The ecological instrument is

Awind vane

Bsix's thermometer

Csecchi disc

Dhygrometer

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Question 13

waec 2025

The following ecological factors affect all habitat except

Atemperature

Bhumidity

Clight

Dpressure

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Question 14

waec 2025

The relationship between a bean plant and a Tridax plant on a farmland is

Acompetition

Bpredation

Cparasitism

Depiphytism

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Question 15

waec 2025

Which of the following statements is not correct about the dental formula of humans?

AOne pair of canines is on the upper jaw and three pairs of premolars are on the lower jaw

BTwo pairs of incisors are the upper jaw and three pairs of premolars are on the lower jaw

CTwo pairs of incisors are on the upper jaw and three pairs of molars are on the lower jaw

DOne pair of canines is on the upper jaw and four pairs of molars are on the lower jaw

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Question 16

waec 2025

If the small intestine of an organism does not have villi, the organism will have a problem with

Adigestion of food only

Babsorption of water

Cabsorption of nutrients only

Ddigestion of food and absorption of nutrients

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Question 17

waec 2025

The diagram below is an illustration of a system in humans. Study it and answer the question below.

The parts that secret substances involved in the digestion of fats are labelled

AI, II and III

BI and III

CII and III

DI, III and IV

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Question 18

waec 2025

The diagram above is an illustration of a system in humans. Study it and answer the question below.

Enzymatic digestion of protein begins in the part labelled

BII

CIII

DIV

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Question 19

waec 2025

The diagram above is an illustration of a cell carrying out a biological process. Study it and answer the question below:

The process is referred to as

Aphagocytosis

Bpinocytosis

Cendocytosis

Dexocytosis

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Question 20

waec 2025

Excessive bleeding from an injury could be due to the lack of vitamin

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Question 21

waec 2025

Chemical digestion in organisms is the

Abreakdown of starch into carbohydrates

Bbreakdown of complex molecules into simple molecules

Cbuild up of simple insoluble molecules

Dbuild up of simple soluble molecules into complex insoluble molecules

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Question 22

waec 2025

Plants which grow and produce fruits within a year are called

Abiennials

Bperennials

Cannuals

Dherbs

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Question 23

waec 2025

An important characteristics of fruits dispersed by water is the presence of

Afibrous covering

Bsmooth surface

Cwater content

Dpericarp

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Question 24

waec 2025

During the process of hearing in mammals, the structure in the middle ear which receives the first vibration is the

Aoval window

Bround window

Cincus

Dmalleus

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Question 25

waec 2025

Long sightedness could be corrected using a

Abiconvex lens

Bconvex lens

Cbiconcave lens

Dconcave lens

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Question 26

waec 2025

The sympathetic nervous system causes

Aconstriction of the arteries

Bheartbeat to slow down

Cincrease in the secretion of saliva

Dcontraction of the bladder

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Question 27

waec 2025

The naturally produced auxin in plants is

AIndole acetic acid

Bdichlorophenoxyacetic acid

Caldone

Dflorigen

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Question 28

waec 2025

Urine when compared with blood in mammals is hypertonic because

Aurine contains high percentage of all cells

Ball traces of sugar have been removed from urine

Curea is actively secreted into the renal tubules

Dmuch water has been removed from urine

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Question 29

waec 2025

Which of the following statements is not correct about respiration in plants?

AIt occurs in all plant tissues

BLight and chlorophyll must be present for it to occur

CEnergy is produced as the end product

DIt occurs in the presence of oxygen

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Question 30

waec 2025

The diagram above is an illustration of a cell carrying out a biological process. Study it and answer the question below:

The biological system that contains cells that carry out the illustrated biological processes in humans is

Areproduction

Bcirculatory

Crespiratory

Dnervous

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