Question

Can some one Please explain this.I have a food web i"m to identify two food groups thats represented in this food web,what is he meaning by food groups??I dont understand these food webs.

Answer 1

he means like the big food groups like grains, fruits, Vegetables,Protein Foods,Dairy

Answer 2

if you need more info just ask

Answer 3

Wait, are we talking about food webs used as a synonym of "food *chain*" or something else?

Answer 4

Im talking about a ecosystem food web for biology

Answer 5

it has like Hawk-Frog-,inseect-plants -deer and so on

Answer 6

you are just finding who eats who and giving the names of what that they are called. for example hawk-mouse Hawk is a predator or a carnivore the mouse is the prey herbivore

Answer 7

that is my best guess on what it means

Answer 8

The term "food chain" has started falling out of favor as many think it indicates a linear like ecosystem, in reference to food. So, in the webs, it reflects that there are usually multiple interactions among the species, like a hawk will eat rabbits and mice.

Now, for the groups, I would guess he is talking about the producers (autotrophs such as plants that use sun to make their food source) and consumers (heterotrophs that eat other organisms).

Answer 9

@jenlee lhe knows more than i do ----> @mrdoldum

Answer 10

Thank you both for your help.These food webs is some thing I just dont get.

Answer 11

@jenlee Well, food webs are meant to track energy and carbon (partially) through an ecosystem, among trohpic levels. Trophic levels are what we use to describe energy source distance from the Sun. In the end, nearly 100% of all energy on terrestrial systems is from the sun. Why?

Well, our first trophic level, the largest, is represented by primary producers. Plants and other photoautotrophs that use the sun to fix atmospheric carbon into sugars—sugars that are then used for energy in the primary producer.

Our second trophic level is heterotrophs that feed on the primary producers. The third level is heterotrophs that feed on the second level. Example, plant to rabbit, rabbit to fox. Each time energy goes up a trophic level there is a loss of ~90% of the energy.

So, food webs are essentially maps of what trophic level organisms are. Trophic levels are usually pyramids. You can trace the energy through trophic levels by starting at the primary consumers in your food web and following the interactions.