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Biology Past Questions and Answers

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Waec Biology Questions

Question 1826:

The vector of the malarial parasite is the

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A Male Anopheles
B Female Culex
C Male Culex
D Female Anopheles
E Female Aedes

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Question 1827:

A constituent of the exhaust gases of motor vehicles which causes serious air pollution is

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A Water vapour
B Carbondioxide
C Carbon monoxide
D Oxygen
E Ozone

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Question 1828:

Which of the following steps would not be taken to protect or conserve fishing grounds from over-exploitation?

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A . Use of nets with all sizes of mesh
B Use of nets with a particular mesh size
C Ban on harvesting of some species
D Regulating the size of ships allowed into fishing grounds
E Limiting the period of fishing in the waters

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Question 1829:

Which of the following .is not part of the objectives of conservation of natural resources?

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A To eliminate wild animals in order to enable other plants and animals survive
B To use our resources on sustained yield basis
C To guard against indiscriminate killing of plants and animals
D To guard against the extinction and exhaustion o natural resources
E To protect the environment

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Question 1830:

During blood transfusion, agglutination may occur as a result of the reaction between

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A Similar antigens and antibodies
B Contrasting antigens and antibodies
C Two different antigens
D Two different antibodies
E White blood cells from the two individuals.

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