ECOLOGY - Jamb Biology Past Questions and Answers

Question 231:

• JAMB 2007

The increasing order of the particle size in following soil type is

A. Clay → sand → silt →gravel
B. Silt → sand → clay → gravel
C. Clay → silt → sand → gravel
D. Silt → clay → sand → gravel

Question 232:

• JAMB 2007

Which of the following is an example of parasitism

A. Fungai growing on a dead tree branch
B. A squirrel living in an abondoned nest of a bird
C. Mistletoe growing on an orange tree
D. Cattle egrets taking ticks from the body of cattle

Question 233:

• JAMB 2007

A crucible of 5 g m weighed 10 gm after filling with fresh soil. it is then heated in an oven at 100°c for 1 hour. After cooling in a desiccator, the weight was 8 gm. The percentage of water in the soil is

A. 80%
B. 60%
C. 20%
D. 40%

Question 234:

• JAMB 2007

The highest level of ecological organization is the

A. Ecosystem
B. Population
C. Biosphere
D. Niche

Question 235:

• JAMB 2007

The mangrove swamp in Nigeria is restricted to the

A. Sahel savana
B. Sudan savanna
C. Guinea savanna
D. Tropical rain forest