A) P = R
B) P > R
C) P < R
D) P\[\ne \]R
Correct Answer: A
Solution :
During ecosystem development from a young to mature stages, the community respiration increases but the P/R (ie, Production/Respiration) ratio remains more than 1 in the sera stages. The huge living biomass respires a lot in the climax stage and the P/R ratio equals 1 (ie, P/R = 1). Thus, in the early stages, P > R and in the climax stage P = R.
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