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The diagram shows the flow of biomass through an agricultural food chain - OCR Gateway - GCSE Biology - Question 21 - 2018 - Paper 1
Question 21
The diagram shows the flow of biomass through an agricultural food chain. Plants grown for cattle food 22000 kg Cattle 2000 kg Humans 200 kg (a) (i) Calculate... show full transcript
Worked Solution & Example Answer:The diagram shows the flow of biomass through an agricultural food chain - OCR Gateway - GCSE Biology - Question 21 - 2018 - Paper 1
Step 1
Calculate how much biomass is lost between the plants and humans.
Answer
To determine the biomass lost between the plants and humans, we can start by calculating the total biomass available and subtracting the biomass at each trophic level.
- Total biomass from plants: 22,000 kg
- Biomass in cattle: 2,000 kg
- Biomass in humans: 200 kg
The total biomass that is consumed by the next trophic levels is the biomass remaining after the transfer:
Biomass Lost = Initial Biomass (Plants) - Final Biomass (Humans)
Biomass Lost = 22,000 kg - 200 kg = 21,800 kg
Thus, the biomass lost between the plants and humans is 21,800 kg.
Step 2