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Biology Past Questions and Answers

Jamb Biology Questions

Question 41:

What ecological condition favours the breeding of black flies?

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A Fresh water habitat
B Water in ponds and swamp
C Water in small containers
D Fast flowing streams

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Question 42:

Carbon monoxide poisons tissue by

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A Constricting the blood vessels
B Killing the cells
C Combining with haemoglobin
D Rupturing the blood vessels

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Question 43:

Which of the following is an example of discontinuous variation observed in man?

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A Skin colours
B Tongue rolling
C Body weight
D Height

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Question 44:

During blood transfusion, agglutination may occur when

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A Contrasting antigens reacts with contrasting antibodies
B Similar antigens react with similar antibodies
C Two different antigens react with each other
D Two different antibodies react with each other

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Question 45:

In the illustration above, the genotypes of the offsprings are

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A 1 heterozygous smooth : 2 homozygous smooth : 1 wrinkled
B 1 homozygous smooth : 2 heterozygous smooth : 1 wrinkled
C 2 homozygous smooth : 2 wrinkled
D 3 heterozygous smooth : 2 wrinkled

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