Biology 1983 JAMB Past Questions

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28 g soil sample was heated to a constant weight of 24 g. When further heated to red hot and cooled, it weighed 18 g. What is the percentage of humus in the soil?

A. 22.2
B. 55.6
C. 75.0
D. 25.0
E. 35.7

View Answer & Discuss (33) JAMB 1983

Which of the following diseases is NOT caused by a virus?

A. Rinderpest
B. Maize rust
C. Newcastle diseases
D. Swine fever
E. Cassava mosaic diseases

View Answer & Discuss (9) JAMB 1983

A centipede differs from a millipede by its

A. colour
B. numerous abdominal segment
C. paired legs on each abdominal segment
D. poison claws
E. cylindrical body

View Answer & Discuss (17) JAMB 1983

An organism having one pair of identical genes is

A. a heterozygote
B. a hybride
C. an allelomorph
D. a homozygote
E. a diploid

View Answer & Discuss (1) JAMB 1983

Plants which can survive in places where the water supply is limited are

A. bryophytes
B. mesophytes
C. xerophytes
D. hydrophytes
E. pteridophytes

View Answer & Discuss (5) JAMB 1983

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