Because heterotrophs such as animals do not assimilate all their food and have ... There are 5 trophic levels in this simple system if one follows the longest feeding chain from either algae ...

Each food chain is a descriptive diagram including ... These feeding groups are referred as trophic levels. Basal species occupy the lowest trophic level as primary producer.

Remember, food chains do not show the number of organisms at each trophic level. Pyramids of number are not always perfect pyramids because of large organisms at the bottom and small ones at the top.

Trophic levels are the layers or ranks within a food chain that describe the roles organisms play in an ecosystem based on their source of energy and nutrients. Essentially, they help define who ...

primary consumers are trophic level 2 and so on. Feeding (consumption). Energy flow. The transfer of substances such as carbon and nitrogen. Food webs show a number of food chains that are ...