Q9 of 67 Page 104

Give two examples of artificial or man made ecosystems. List the salient features by which they differ from natural ecosystems.

Man made ecosystem- Agricultural fields and Aquarium.

Man made ecosystem involves few organisms as compared to natural ecosystem which leads to comparatively low productivity.


Man made ecosystem requires proper input for maintenance whereas natural ecosystems are self sustainable.


More from this chapter

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7

“The energy flow in the ecosystem follows the second law of thermodynamics.” Explain.

 8

What will happen to an ecosystem if:

a. All producers are removed;


b. All organisms of herbivore level are eliminated; and


c. All top carnivore population is removed


 10

The biodiversity increases when one moves from the pioneer to the climax stage. What could be the explanation?

 11

What is a biogeochemical cycle. What is the role of the reservoir in a biogeochemical cycle. Give an example of a sedimentary cycle with reservoir located in earth’s crust.