An ecosystem is Different communities of plants, animals and microbes together with their physicochemical environments

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Free Online Mock Biology Multiple Choice Test on Eco Systems

Sub Category : Eco Systems	Test : 2	Time Left :
1. The importance of ecosystem lies in
(1) Cycling of materials (2) Flow of energy (3) Both (1) and (2) (4) ITS biomass.
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2. An ecosystem is
(1) Different communities of plants, animals and microbes together with their physicochemical environments (2) Different communities of plants and microbes along with their physico-chemical environments. (3) A localised assemblage of several plants and animals (4) As assemblage of plants, animals and their surroundings.
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3. Biotic components of an ecosystem include
(1) Producers, consumers and decomposers (2) Producers and consumers (3) Producers only (4) Consumers only.
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4. Green plants constitute ?
(1) Complete food chain (2) Second trophic level (3) First trophic level (4) Third trophic level.
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5. First link in food chain is green plant because ?
(1) It alone can synthesise food (2) It is fixed at one place (3) It can pick up everything (4) It can eat everything.

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Free Online Mock Biology Multiple Choice Test on Eco Systems