The Ecology of Populations - Jamb Biology Past Questions and Answers

Question 11:

• JAMB 2003

A density-dependent factor that regulates the population size of organism is

A. Disease
B. Sudden flood
C. Drought
D. Fire outbreak

Question 12:

• JAMB 2003

A limited factor in a plant population near a chemical factory is likely to be

A. Light
B. Humidity
C. Wind
D. PH

Question 13:

• JAMB 2004

The scarcity of food causes a sudden decrease in population size by

A. Decreasing the reproductive rate
B. Bringing about immigration
C. Raising the mortalility rate
D. Minimizing the rate of competition

Question 14:

• JAMB 2005

The population density of Tridex in an abandoned square farm land of side 200 m was found to be 5 plants per m². The population size of the plant on the farm is

A. 40
B. 1000
C. 40000
D. 200000

Question 15:

• JAMB 2006

A population that doubles in size at constant intervals is an indication of

A. Sigmoid growth
B. Exponential growth
C. Population explosion
D. Rapid growth