Trophic Levels

Biology SSS 1 Second Term

WEEK 10

Trophic Levels

Performance Objectives

Student should be able to:

1. Define food chain and food web
2. Know the nature of energy flow in the food chain
3. Know the nutrient flow in aquatic and terrestrial habitat

Content

An ecosystem is a basic functioning unit in nature. It is made up of living organisms (plants and animals) and their non-living environment. The biotic or living components such as the producers and consumers interact in their environment resulting in the ecosystem being a functional unit.

Food Chain

The order of living organisms in a community in which one organism consumes others and is itself consumed by another organism to transfer energy is called a food chain. Food chain …