Food Chains and Food Webs Guided Notes Energy Roles of Organisms in an Ecosystem Producer ___________________ is an organism that can make its own food. grasses Examples include ________________, trees other plants _______________, and _______________. Producers ____________________ are the source of all energy in an ecosystem. Plants ________________ are producers that sun capture energy from the ________________ food and turn it into ___________ in the form of sugar and starches ______________________. Photosynthesis ________________________ is the process that organisms go through to produce energy Carbon dioxide and by using _______________ water __________________ to produce molecules sugar such as ______________ and starches __________________, along with oxygen _______________. Consumers _________________________ are organisms the obtain energy by feeding on other organisms. Types Of Consumers Type of Consumer Type of Food Herbivore Only plants Carnivore Only animals Omnivore Both plants and animals Dead organisms Scavenger Decomposers ______________________ - Organisms waste that break down ___________ material organisms and dead _________________ and return the raw materials to the environment. Examples of Decomposers : Bacteria, and fungi __________________________________ Food Chain - Series of events in which _____________ one organism eats another to obtain energy. Example: 1. Producer First-level or primary consumer 2. ______________________________ (eats producer) 3. ______________________________ Second-level or secondary consumer (eats consumer) Food web ______________________ - Consists of overlapping many ________________ food chains in an ecosystem. Energy Pyramid _______________________Shows the amount of energy that moves from one feeding level to another in a food web. 10 % A. Only _______________ of the energy at one level of a food web is transferred to the next level. 90 % B. _______________ of the energy is used for the organism’s life processes or is lost as heat to the environment.