ECOLOGY - Jamb Biology Past Questions and Answers

Question 96:

• JAMB 1990

which of the following disease is rarely spread by a housefly?

A. Yellow fever
B. Dysentry
C. Typhoid fever
D. Poliomyelitis

Question 97:

• JAMB 1990

In a savanna ecosystem the abiotic factors include

A. Legumes, temperature and sandy soil
B. Water, temperature and soil
C. Minerals, oxygen and reptiles
D. Water, soil and grasses

Question 98:

• JAMB 1990

which of the organisms will have the lowest population in an ecosystem?

A. Hawk
B. Cowpea
C. Praying mantis
D. Mouse

Question 99:

• JAMB 1990

The salinity of a brackish enviroment

A. Increases immediately after rain
B. Increase at the end of rainy season
C. Decrease with increase in micro-organisms
D. Increase during dry season

Question 100:

• JAMB 1990

Which set of disease is spread mainly by insect vectors?

A. Cholera, tenia and gonorrhoea
B. Poliomyelitis, tuberculosis and syphilis
C. Cholera, malaria and tuberculosis
D. Malaria, cholera and river blindness