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Biology
Ecosystem
85 questions from 36 papers, each with its answer.
- 85 questions
- 36 papers
- 2.41% of Biology
Ecological pyramids - energy, biomass, numbers
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Which of the following statements is incorrect?Energy content actually decreases (not increases) progressively from lower to higher trophic levels, following the 10 percent law of energy transfer — so the statement that energy content increases from first to fourth trophic level is incorrect.
Biogeochemical cycles - phosphorus cycle
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Which of the following statements is incorrect regarding the phosphorus cycle?Unlike the carbon or nitrogen cycles, the phosphorus cycle is a sedimentary cycle with no significant gaseous/atmospheric phase — there is no appreciable respiratory release of phosphorus into the atmosphere, so this statement is incorrect.
Factors affecting rate of decomposition
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The rate of decomposition is faster in the ecosystem due to following factors EXCEPT:Detritus rich in lignin and chitin decomposes more slowly (these are resistant structural compounds), so this factor is an exception — it actually slows down decomposition rather than speeding it up, unlike detritus rich in sugars, a warm/moist environment, or the presence of aerobic microbes.
That is every question in Ecosystem for this filter.
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