ECOLOGY - Jamb Biology Past Questions and Answers

Question 66:

• JAMB 1986

In an agricultural ecosystem, the biotic component consists of

A. Crop, pest and beneficial insects
B. Crops, temperature and humidity
C. Pests, beneficial insects and water
D. Crops, water and soil

Question 67:

• JAMB 1986

Which of these disease CANNOT be prevented by immunization?

A. Poliomyelitis
B. Tuberculosis
C. Cholera
D. Onchocerciasis

Question 68:

• JAMB 1986

Which of the following ecological factors are common to both terrestrial and aquatic habitats?

A. Rainfall, temperature and light
B. Salinity, rainfall and altitude
C. Tides, wind, rainfall and altitude
D. PH, salinity, rainfall and humidity.

Question 69:

• JAMB 1986

In community, bacteria and fungi are referred to as

A. Producers
B. Decomposers
C. Scavengers
D. Consumers

Question 70:

• JAMB 1986

A larger percentage of tropical soils tends to be acidic because they

A. Contain large quantities of potash
B. Contain large quantities of lime
C. Lose a high proportion of their organic matter to running water
D. Lose lime and potash from the top soil through rain action