Primary producers, also called autotrophs, are organisms that can produce their own food. Most autotrophs lie at the bottom of the food chain, serving as food sources for animals farther up the line. Primary producers ar... More »

The primary producers of savannas are grasses and scattered trees and shrubs. Producers are organisms in a food chain that produce their own energy and nutrients rather that feeding on other organisms. More »

Algae are producers. This means they produce their own energy, usually through photosynthesis. Like most producers, algae turn sunlight, carbon dioxide and water into glucose for energy. More »

The most significant importance of the kingdom Protista is as primary producers, and thus food sources, for other organisms, as well as generators of oxygen. Single-celled oceanic algae, which are members of Protista, ac... More »

To create a food web diagram, determine the organisms that make up the top level, secondary and primary consumers, and then determine producers and decomposers. Draw the diagram from top to bottom, and use arrows to indi... More »

Autotrophs and heterotrophs differ in the way they obtain energy; autotrophs make their own energy whereas heterotrophs must consume other organisms to get their energy. Autotrophs are the producers of ecosystems, which ... More »

Organisms that make their own food classify as autotrophs, and include many types of plants, bacteria and fungi. These organisms live on land and in water, and use light, water, carbon dioxide or other chemicals to make ... More »