ECOLOGY - Jamb Biology Past Questions and Answers

Question 156:

• JAMB 1998

The condition that encourages denitrification is

A. Low soil oxygen
B. High soil nitrogen
C. Absence of soil bacteria
D. Lightening and thunderstrom

Question 157:

• JAMB 1998

The sequence of the biomes in Nigeria from port Harcourt to Damaturu is

A. Estuarine → rain forest → Guinea Savannah → Sahel Savannah
B. Rain forest → Guinea savannah → estuarine → desert
C. Estuarine → Guinea savannah → rain forest → Sahel savannah
D. Rain forest → estuarine → Guinea savannah → desert

Question 158:

• JAMB 1998

Soil micro-organisms are beneficial because of their involvement in

A. Photosynthesis
B. Translocation
C. Cycling of nutrients
D. Respiration using soil air

Question 159:

• JAMB 1998

The biological association that contributes directly to succession in a community is

A. Competition
B. Predation
C. Parasitism
D. Commensalism

Question 160:

• JAMB 1999

A soil consisting of alumina and iron (II)oxide is known as

A. Loamy soil
B. Clayey soil
C. Laterite
D. Podzol