Biology Past Questions

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Past Questions

5,032 questions
Question 1 of 20 5,032 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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Question 31
jamb 2025

The type of holozoic nutrition where organisms feed on both plant and animal substances is  

Asaprophytic
Bherbivorous
Comnivorous
Dcarnivorous
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Question 32
jamb 2025

Chemical breakdown of large food molecules into smaller and soluble substances is the function of 

Alarge intestine
Bduodenum
Crectum
Dileum
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Question 33
jamb 2025

The stamen of a flower consists of 

Afilament and anther
Bovary and stigma
Cfilament and ovary
Dsepals and petals
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Question 34
jamb 2025

The type of germination in which the cotyledons remain below the soil surface is 

Aplumule
Bmicropyle
Chypogeal
Depigeal
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Question 35
jamb 2025

The level of organization in onion bulb is 

Asystem
Btissue
Ccell
Dorgan
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Question 36
jamb 2025

An example of application of variation is 

Apaternity determination
Bsex determination
Cpopulation control
Dsurvival of the fittest
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Question 37
jamb 2025

The zone in an ecosystem that provides habitat for living organism is referred to as

Aatmosphere
Blithosphere
Cbiosphere
Denvironment
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Question 38
jamb 2025

Long beak with saw-like edges is an adaptation in 

Awood pecker
Bkingfisher
Cpelican
Dduck
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Question 39
jamb 2025

A structure associated with an open circulatory system is 

Avein
Bartery
Carteriole
Dhaemocoel
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Question 40
jamb 2025

Use the illustration above to answer the question that follows

What is the genotypic ratio of the F\(_2\) generation?

A2 :1 :1
B3 : 1
C1 : 1
D1 : 2: 1
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