1 / 7

Food Chain

Food Chain.

ivie
Télécharger la présentation

Food Chain

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Food Chain

  2. Food chains, also called food webs, food networks and/or trophic networks, describe the feeding relationships between species to another within an ecosystem. Organisms are connected to the organisms they consume by arrows representing the direction of biomass transfer. Typically a food chain or food web refers to a graph where only connections are recorded, and a food network or ecosystem network refers to a network where the connections are given weights representing the quantity of nutrients or energy being transferred.

  3. The source of all food is the activity of autotrophs, mainly photosynthesis by plants

  4. They are called producers because only they can manufacture food from inorganic raw materials. • This food feeds herbivores, called primary consumers. • Carnivores that feed on herbivores are called secondary consumers. • Carnivores that feed on other carnivores are tertiary (or higher) consumers

  5. Each level of consumption in a food chain called a trophic level.

More Related