Jamb Biology 2008 Past Questions and Answers

Question 21:

• JAMB 2008

The transmission of impulses along a nerve fibre is characterized by

A. Hormonal and temperature changes
B. Electrical and ionic changes
C. Hormonal and changes
D. Electrostatic changes

Question 22:

• JAMB 2008

The major consequences of bush burning in an ecosystem is

A. The loss of water
B. The loss of biological diversity
C. A decrease in animal population
D. An increase in soil fertility

Question 23:

• JAMB 2008

Which of the following associations is an example of mutualism

A. Hydra viridis and zoochlorellae
B. Human and lice
C. Shark and remora fish
D. Bread and rhizopus stolonifer

Question 24:

• JAMB 2008

In a typical freshwater habitat, the edge of the stream or pond constitutes the

A. Tidal zone
B. Intertidal zone
C. Littoral zone
D. Euphotic zone

Question 25:

• JAMB 2008

The main ecological problem facing intertidal organisms is

A. Desiccation
B. Floatation
C. Salinity
D. Humidity