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.

50 questions JAMB 2572 WAEC 2099 NECO 351 CUSTOM 10
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Past Questions

50 questions
Question 1 of 10 50 total questions
Question 21
waec 2025

Sclerenchyma tissues in plants is for 

Awater conduction
Bmechanical support
Cfood storage
Dfood transport
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Question 22
waec 2025

How many molecules of oxygen are required for the aerobic respiration of three molecules of glucose?

A3
B6
C12
D18
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Question 23
waec 2025

Four cells each with osmotic potential of about 3% salt solution was immersed respectively into solutions of different concentrations as follows:

I - 1% salt solution; II - 3% salt solution; III - 6% salt solutuon; IV - 10% salt solution.

If the cells are plant cells, what would happen to the cell in solution III? It would become 

Aturgid
Bcrenated
Chaemolysed
Dplasmolyzed
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Question 24
waec 2025

Four cells each with osmotic potential of about 3% salt solution was immersed respectively into solutions of different concentrations as follows:

I - 1% salt solution; II - 3% salt solution; III - 6% salt solutuon; IV - 10% salt solution.

Which of the solutions will cause an increase in osmotic pressure within the cell?

AI
BII
CIII
DIV
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Question 25
waec 2025

The functions of vacuoles in plants are storage and 

Aprotection
Bstrength
Csupport
Dsensitivity
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Question 26
waec 2025

The diagram above is an illustration of a dicot leaf. Study it and answer the question below.

The part that contains the phloem and xylem is labelled 

AI
BII
CIII
DIV
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Question 27
waec 2025

The diagram above is an illustration of a dicot leaf. Study it and answer the question below.

The parts labelled I,II,III and IV respectively are 

Avein, apex, midrib, stalk
Bmidrib, petiole, margin, stalk
Capex, lamina, blade, axil
Dapex, midrib, lamina, axil
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Question 28
waec 2025

The diagram above is an illustration of the nymph of an insect. Study it and answer the question below:

The growth process that would occur in the organism before it becomes an adult is 

Arespiration
Blocomotion
Cmoulting
Dsensitivity
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Question 29
waec 2025

The diagram above is an illustration of the nymph of an insect. Study it and answer the question below:

The organism illustrated is a stage in the 

Agrasshopper
Bmosquito
Ctermite
Dcockroach
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Question 30
waec 2025

The Genus into which man is classified is

AChordata
Bmammalia
Chomo
Dsapiens
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