SOIL - Jamb Biology Past Questions and Answers

Question 51:

• JAMB 2003

The stunted growth of a leguminous plant suffering from nitrogen deficiency may be corrected by inoculating the soil with

A. Denitrifying bacteria
B. Saprophytic bacteria
C. Rhizobium
D. Nitrosomonas

Question 52:

• JAMB 2003

In the experiment, the layer of oil serves to prevent water loss

A. Transpiration
B. Evaporation
C. Osmosis
D. Guttation

Question 53:

• JAMB 2003

Soil fertility can best be conserved by the activities of

A. Earthworm
B. Man
C. Rodent
D. Microbes

Question 54:

• JAMB 2004

The soil type that will be most difficult to plough in a wet season is one that is

A. Loamy
B. Clayey
C. Sandy
D. Silty

Question 55:

• JAMB 2004

A farm practice that result in the loss of soil fertility is

A. Mixed farming
B. Bush fallowing
C. Shifting cultivation
D. Continous cropping