Which of the following statements are correct?
(i) In an aquatic ecosystem, DFC is the major conduit for energy flow.
(ii) In a terrestrial ecosystem, a much larger fraction of energy flows through the GFC than through the detritus food chain.
(iii) In a natural ecosystem, some animals like cockroaches, crows, etc., are only carnivores.
(iv) Each trophic level has a certain mass of living material at a particular time called as the standing state.
(v) The standing crop is measured as the mass of living organisms or the number in a unit area.
(vi) The biomass of a species is expressed in terms of fresh or dry weight.
(vii) Measurement of biomass in terms of fresh weight is more accurate.
Text Solution
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Statements (v) and (vi) are accurate because standing crop is the total biomass per unit area, typically measured by mass or number. Dry weight is the standard for accuracy in biomass measurement, as fresh weight varies with water content.
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