Page 2 - 3.Home Assignment-Ecosystem and its components

8. The microorganisms comprise of - 1
(a) Bacteria
(b) Fungi
(c) Both (a) and (b)
(d) Green plants

9. Following is (are) the consumer(s) 1
(a) Herbivore
(b) Omnivore
(c) Parasites
(d) All of the above

10. Which one of the following will undergo fastest biodegradation? 1
(a) Mango seed
(b) Wood
(c) Mango peel
(d) Mango pulp

Subjective

1. Give two examples of manmade (artificial) ecosystems. 1 E

2. What happens to the dead organisms in an ecosystem? 1 E

3. Differentiate between producers and consumers. 1 Av

4. (a) What are decomposers? State their importance in the abiotic 3 Av
environment.
(b) Why is natural ecosystem (e.g., forest) more stable than cropland
ecosystem?
(i)
5. (a) Which organisms produce food in an ecosystem and why? 3 D
(b) What would happen if all the decomposers were removed from the
ecosystem?

6. (a) Define ecosystem. 3 D
(b) Is an aquarium a self-sustaining system?
(c) Are lakes and ponds cleaned regularly? Why or why not?

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