Jamb Biology Past Questions and Answers

Question 486:

• 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 487:

• JAMB 1986

Which of these disease CANNOT be prevented by immunization?

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

Question 488:

• 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 489:

• JAMB 1986

In community, bacteria and fungi are referred to as

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

Question 490:

• JAMB 1986

The swollen shoot disease of cocoa tree is caused by a

A. Virus
B. Fungus
C. Bacterium
D. Protozoan