Biology
Grade-10
Easy
Question
Which of the following equations for the stable environment is TRUE?
- P-R=1
- P/R < 1
- P/R > 1
- P/R =1
Hint:
P/R=1
The correct answer is: P/R =1
With progress of succession Biomass of organisms increases and P/R ratio tends to be 1 (P/R=1). This indicates the stability of ecosystem.
The relationship between gross production and total community respiration. Where P/R = 1 a steady-state community results. If P/R is persistently greater or less than 1 then organic matter either accumulates or is depleted respectively.
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