Biology 1980 JAMB Past Questions

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Leguminous plants, e.g Mucana, are usually planted in cultivated farmlands because they

A. enrich the soil with phoshates
B. provide animals with food
C. enrich the soil with organic nitrogen
D. protect the soil from being over-heated
E. protect the micro organisms in the soil

View Answer & Discuss (1) JAMB 1980

During thunderstorms the energy of lightning discharge causes

A. oxygen and nitrogen to combine
B. more carbon dioxide to be formed
C. nitrites to be converted to nitrates
D. nitrates to be converted to nitrogen
E. death

View Answer & Discuss (6) JAMB 1980

A few grams of dried soil were first heated until red hot and then further heated until no more smoke was released. This experiment was to determine

A. amount of water in soil
B. percentage of water in soil
C. presence of humus in soil
D. resistance of laterities to heat
E. release of smoke from the soil

View Answer & Discuss (11) JAMB 1980

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Oxygen from the atmosphere reaches the mammalian blood stream through one of the path indicated below. Indicate the correct path, a = mouth, b = trachea, c = bronchiole, d = nostril, e = bronchus, f = alveoli

A. a → b → e → f → d
B. b → d → f → e → c
C. d → b → e → c → f
D. b → a → f → e → c
E. f → e → c → d → c

View Answer & Discuss (5) JAMB 1980

Below are some group of diseases. Which group of diseases is caused by bacteria?

A. Tuberculosis, smallpox
B. Gonorrhoea, measles
C. Tuberculosis, polio
D. Sleeping sickness, measles
E. Syphilis, gonorrhoea

View Answer & Discuss (3) JAMB 1980

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