Question

Ecosystems How is food chain different from a food web? Explain the difference between gross primary production and net primary production? What is the role of plant metabolism (respiration) in productivity? Why is energy lost from a food chain? Where does it go? Is it destroyed'? What limits NPP? What patterns exist in NPP in oceans vs terrestrial ecosystems? Are nutrients involved with NPP? Which ones? What trophic level (group of organisms) is needed for every ecosystem? What do the arrows in a food chain (or web) represent? Why are the directions of arrows in food chain or web important? What are biogeochemical cycles Explain the Carbon Nitrogen and Phosphorus cycles Explain what role decomposers have in an ecosystem and in rate of biogeochemical cycling Describe the difference between how energy and matter move through an ecosystem Why are food chains relatively short? What is the difference between bottom up vs top down regulation? What is meant by evapotranspiration?

Answer 1

Ans:- 1)

Difference between food web and food chain :-

Food web:- It consists of many food chains connected together . A food web shows many different paths plants and animals are connected.

Food chain:- It is the pattern that energy uses to transmit to producers to decomposers. It only follows just one path as animals find food. Eg:- A hawk eats a snake, which has eaten a frog, which has eaten grass.