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Food chain

Definition

A feeding hierarchy in which organisms in an ecosystem are grouped into trophic (nutritional) levels and are shown in a succession to represent the flow of food energy and the feeding relationships between them.


Supplement

The directional flow of materials and energy from one organism to another is graphically represented by arrows. For example: trees and shrubs (producer) → giraffe (herbivore) → lion (carnivore).

Most food chains have only about four to five links since too many links in a food chain will result in high demand, less supply of food (and therefore energy).


See also: food web, trophic level.


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Re: photoautotroph and photoheterotroph difference?

... organisms for their nutrients. So photoautotrophs form the basis of the food chain and basically keep the world running. Mixotrophic is when an organism is both autotrophic ...

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by cash
Wed Oct 23, 2013 12:40 am
 
Forum: Ecology
Topic: photoautotroph and photoheterotroph difference?
Replies: 3
Views: 33155

Energy; respiration and photosynthesis

... think that energy get end as it is constantly being used in producing food and to make a working food chain. It is better to say that energy get replaced but not lost. Hope you understand.

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by jeffz
Thu Jul 18, 2013 2:30 am
 
Forum: Ecology
Topic: Energy; respiration and photosynthesis
Replies: 7
Views: 6727

why is the reproductive system immune to entropy?

... for example, can divide virtually indefinitely if they just have food and room, and you do not see them 'dying of old age'. Since their cellular ... on Earth has fought entropy successfully ever since, as an unbroken chain that has evolved into such weird things as you or I, or bacteria.)

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by biohazard
Wed Jun 12, 2013 9:44 am
 
Forum: General Discussion
Topic: why is the reproductive system immune to entropy?
Replies: 3
Views: 1859

Energy; respiration and photosynthesis

... moving breathing growing etc, which, being energy, cannot return to the food chain. It is therefore rightly counted a loss. Which means that for the system to continue, ...

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by animartco
Sat Jun 08, 2013 12:45 pm
 
Forum: Ecology
Topic: Energy; respiration and photosynthesis
Replies: 7
Views: 6727

Energy; respiration and photosynthesis

... I have a question concerning this statement about energy losses in food chains: "Any energy transferred in respiration is lost to the environment or used in movement ...

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by JoElgar
Thu Jan 10, 2013 5:09 pm
 
Forum: Ecology
Topic: Energy; respiration and photosynthesis
Replies: 7
Views: 6727
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