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Biomass is lost as it passes through a food chain - OCR Gateway - GCSE Biology - Question 2 - 2023 - Paper 4
Question 2
Biomass is lost as it passes through a food chain. Which processes are responsible for this loss in biomass? A. Egestion, excretion and respiration B. Egestion, t... show full transcript
Worked Solution & Example Answer:Biomass is lost as it passes through a food chain - OCR Gateway - GCSE Biology - Question 2 - 2023 - Paper 4
Step 1
A. Egestion, excretion and respiration
Answer
In the context of a food chain, biomass loss can occur due to several processes. Egestion refers to the removal of undigested food, which does not contribute to the biomass of the consumer. Excretion involves the elimination of metabolic waste products that are also not usable for energy or matter in the organism's body. Respiration is a process that converts biomass into energy, releasing carbon dioxide and water, which also contributes to the loss of biomass. Therefore, the correct answer is A.