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The diagram shows pyramids of biomass for two food webs, X and Y - OCR Gateway - GCSE Biology - Question 14 - 2020 - Paper 4
Question 14
The diagram shows pyramids of biomass for two food webs, X and Y. Which statement explains the difference between the two pyramids? A. In food web X there is a gre... show full transcript
Worked Solution & Example Answer:The diagram shows pyramids of biomass for two food webs, X and Y - OCR Gateway - GCSE Biology - Question 14 - 2020 - Paper 4
Step 1
Which statement explains the difference between the two pyramids?
Answer
The correct answer is option D: In food web X there is a lower efficiency of transfer between secondary consumer and tertiary consumer than in Y.
Explanation:
The analysis of the pyramids of biomass indicates that food web Y shows a more balanced energy transfer between the trophic levels compared to food web X. Generally, the efficiency of energy transfer decreases as we move up the food chain. In food web X, the lower biomass at the tertiary consumer level suggests that less energy is being transferred to that level compared to food web Y, which supports the claim in option D.