ECOLOGY - Jamb Biology Past Questions and Answers

Question 161:

• JAMB 1999

The sign + is used to indicate an association where an organism gains, while 0 is used where an organism is unaffected. An association indicated as +0 is known as

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

Question 162:

• JAMB 1999

Which of the following characterizes the white mangrove?

A. Prop roots
B. Buttress roots
C. Breathing roots
D. Stilt roots

Question 163:

• JAMB 1999

The biomass is likely to increase in the sequence

A. 1→2→4→5
B. 1→3→4→5
C. 3→5→6→7
D. 5→4→3→1

Question 164:

• JAMB 2000

An ecological succcession often leads to

A. An increase in species diversity
B. Decrease in species diversity
C. An unstable community
D. The dispersal of species

Question 165:

• JAMB 2000

Atmospheric nitrogen is converted to soil nitrogen for plant use by

A. Nitrification and combustion
B. Putrefaction and lightning
C. Lightning and nitrification
D. Combustion and putrefaction