2015 WAEC Biology past questions and answers

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1
Which of the following organisms is not a protozoan?

A Amoeba

B Ascaris

C Plasmodium

D Paramecium



Correct Option: B


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2
The structure of the cell membrane is a

A double layer and a double protein layer

B middle bi-layer of protein with a lipid layer on either surface

C middle bi-layer of lipid with a protein layer on either surface

D protein layer with two inner lipid layers



Correct Option: C


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3
Which of the following cells is a specialized cell?

A Amoeba

B Plasmodium

C Guard cell

D Meristematic cell



Correct Option: C


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4
When a Spirogyra filament is placed in a concentrated salt solution for 30 minutes, the cell would become

A plasmolysed

B turgid

C shortened

D elongated



Correct Option: A


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5
Water and salts are both lost from the human body in

A breath and sweat

B breath and Urine

C breath, urine and sweat

D sweat and urine



Correct Option: D


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6
Which of the following features could be used to determine the growth of a seedling?

A Number of flowers

B Number of leaves

C Length of flowers

D Length of radicle



Correct Option: D


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7
A plant that commonly undergoes vegetative propagation by means of leaves is

A Hibiscus

B Bryophylum

C Crotalaria

D Spirogyra



Correct Option: B


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8
Blood pressure is higher in the arteries as a result of

A stree

B contraction and relaxation

C blockage in the arteries

D presence of valves



Correct Option: B


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9
A farmer who wants to keep seeds for three years before planting and wants to prevent them from sprouting uses

A auxin

B gibberellins

C abscisin

D cytokinins



Correct Option: C


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10
A person had an accident that affected the skull but not the nose and later lost the sense of smell. The accident must have a affected the

A nose by extension

B olfactory lobes of the brain

C passage from the nose to the brain

D part of the skull near the nose



Correct Option: B


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