Question

Suppose that the net secondary production in a community is 1,600 kilograms. The respiration of heterotrophs...

Suppose that the net secondary production in a community is 1,600 kilograms. The respiration of heterotrophs is 3,000 kilograms, and the egestion is 800 kilograms. Plant respiration is 6,500 kilograms. How much plant material did the heterotrophs ingest?

1,600 kilograms

2,400 kilograms

4,600 kilograms

5,400 kilograms

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Answer #1

ANSWER: 5400

RATIONALE: Secondary heterotrophs receives energy from the consumption of organic Compound which are the products of the other organisms. NET SECONDARY PRODUCTION (NSP) denotes the consumption of organic matter by the heterotrophs which are used for biomass, respiration and egestion

FORMULA FOR NSP = INGESTION -RESPIR-RESPI- EGESTION

1600 = x- (-3000-800)

x= 1600+3000+800

Ingestion =5400

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