Food chain in an ecosystem exists close relation to other food chains in the same ecosystem, Primary productivity means Production by autotrophs

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Free Online Mock Biotechnology Multiple Choice Test on Ecosystem Environment

Sub Category : Ecosystem Environment	Test : 3	Time Left :
1.A food chain in an ecosystem exists
(1) Independent of other chains in the same ecosystem (2) In close relation to other food chains in the same ecosystem (3) In close relation to other food chains of different ecosystems (4) None of the above
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2.Flow of energy in an ecosystem is
(1) Unidirectional (2) Bidirectional (3) Irregular (4) Multidirectional
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3.Regarding a food chain, food wed, which of the following statements is true
(1) Number of trophic levels do not have any effect on its stability (2) Greater the number of trophic levels greater is the stability (3) Greater the number of trophic levels lesser is the stability (4) Smaller the number of trophic levels greater the stability
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4.Primary productivity means?
(1) Production by heterotrophs (2) Production by herbivores (3) Production by autotrophs (4) Production by primary carnivores
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5.In an expression where Pg=gross productivity. Pn = net productivity and R = energy lost during respiration, which of the following equation states that there is an increase biomass?
(1) Pg = R (2) Pg greater than Pn (3) Pg less than Pn-R (4) Pg = Pn-R

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Free Online Mock Biotechnology Multiple Choice Test on Ecosystem Environment