2001 WAEC Biology past questions and answers

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1
Which of the following indicates that Euglena is plant?

A Conspicuous 'eye' spot

B Presence of gullet

C Limited movement

D Presence of starch grain



Correct Option: D


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2
Which of the following is a tissue?

A Volvox

B Chlamydomonas

C Epidermis

D Paramecium



Correct Option: C


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3
The structure that produces ATP is labelled

A VII

B V

C VI

D I



Correct Option: A


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4
The structure labelled V is the

A cell wall

B nucleus

C endoplasmic reticullum

D mitochondrion



Correct Option: C


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5
The major function of the cell membrane is that it

A delimits the cytoplasm

B synthesizes protein

C breaks down worn-out organelles

D is the site for photosynthesis



Correct Option: A


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6
Carbohydrates are stored in the animal cell in the form of

A starch

B glycogen

C plastid

D maltose



Correct Option: B


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7
A piece of yam weighing 1.0 gm was put into some salt solution. After 3 hours, it was removed and weighed.
The recorded weight was 1.2gms. This simple experiment demonstrates that the

A salt solution is more concentrated than the cell sap of the yam.

B cell sap of the yam is more concentrated than the salt - solution

C salt solution has the same concentration as the cell sap of the yam.

D the yam lost some water molecules to the salt solution.



Correct Option: B


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8
A major reason why the red blood cells can survive in the blood is that the

A blood plasma and the red blood cells are isotonic

B red blood cells are hypotonic to the plasma

C the red blood cells are hypertonic to the blood plasma

D the red blood cells receive digested nutrients



Correct Option: A


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9
Which of the following phenomena affects plants growth in an alkaline soil?

A Excessive plasmolysis

B Excessive transpiration

C Excessive sunlight

D Poor drainage



Correct Option: D


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10
A red blood cell haemolyses when placed in a hypotonic solution because

A it contains haemoglobin

B the cytoplasm is less dense

C the cell lacks a wall

D its pigment has a high affinity for water



Correct Option: B


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