1999 WAEC Biology past questions and answers

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1
Which of the following organisms does not exist as a single cell?

A Amoeba

B Euglena

C Volvox

D Chlamydomonas



Correct Option: C


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2
Which of the following features of Paramecium is not an advancement over Amoeba? The possession of

A definite shape

B cilia

C oral groove

D nucleus



Correct Option: D


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3
Which of the following diseases results from the deficiency of insulin?

A Cretinism

B Goitre

C Beri-beri

D Diabetes



Correct Option: D


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4
Root hairs absorb water from the soil by

A diffusion

B osmosis

C plasmolysis

D translocation



Correct Option: B


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5
One of the similarities between algae and mosses is their possession of

A chlorophyll

B stem

C leaves

D roots



Correct Option: A


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6
The vessel that carries blood from the heart to the lungs is called an artery because it

A contains oxygenated blood

B contains more blood than the other vessels

C carries blood away from the heart

D has thick inelastic wall



Correct Option: C


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7
During anaerobic respiration in skeletal muscles, pyruvic acid is

A reduced to lactic acid

B oxidized to ethanol

C oxidized to lactic acid

D reduced to water



Correct Option: A


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8

Use the information on the stages involved in conjugation to answer the 2 questions below


I. Transfer of one cell content into the adjacent cell ll. Formation of a conjugation tube III. Secretion of thick
wall to form a zygospore IV. Formation of a protuberance V. Germination of a filament Which of the following organisms exhibits 'the stages listed above during conjugation?

A Chlamydomonas

B Euglena

C Spirogyra

D Volvox



Correct Option: C


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9

Use the information on the stages involved in conjugation to answer the 2 questions below


I. Transfer of one cell content into the adjacent cell ll. Formation of a conjugation tube III. Secretion of thick
wall to form a zygospore IV. Formation of a protuberance V. Germination of a filament Which of the following arrangements is the correct sequence of the process?

A II, I, IV, V and III

B IV, II, I, III and V

C IV, I, II, V and III

D V, II, III, IV and I



Correct Option: A


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10
The teeth used for tearing and cutting are

A canine and molars

B premolar and incisors

C molar and incisors

D canine and incisors



Correct Option: D


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