JAMB Biology · Section 4

The Ecology of Populations

C: Ecology

Content items
4content items
Objectives
4objectives
Section topics
7section topics

Syllabus content and objectives

Official JAMB Biology outline · C: Ecology

Content

Population density and overcrowding; rapid changes in human population; density calculated as the number of organisms per unit area.

Objective

Determine reasons for rapid changes in human population and the consequences of overcrowding; calculate population density as the number of organisms per unit area.

Content

Adaptations for survival; factors causing competition; intraspecific and interspecific competition; niche differentiation; relationships between competition and succession.

Objective

Relate population increases, disease, food shortages and lack of space to intraspecific and interspecific competition; determine how niche differentiation reduces intraspecific competition; relate competition to succession.

Content

Factors affecting population size: biotic factors, including food, pests, disease, predation, competition and reproductive ability; abiotic factors, including temperature, space, light, rainfall, topography, pressure and pH.

Objective

Deduce the effects of biotic and abiotic factors on population size; determine interactions between biotic and abiotic factors, such as drought or water scarcity causing food shortages and lack of space increasing disease rates.

Content

Ecological succession: primary and secondary succession; sequence of succession leading to a stable climax community.

Objective

Trace the sequence of ecological succession to the climax stage of stability in plant populations.

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