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Question 15

Biology HL Paper 1 (May 2024, TZ2)

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  1. The diagram shows flows of energy and matter in an ecosystem. What do the letters P, Q and R represent?
Diagram showing the flow of energy and matter between producers, consumers, and decomposers, with labels P, Q, and R indicating specific points in the flow. A key differentiates between energy and matter flow.
Diagram showing the flow of energy and matter between producers, consumers, and decomposers, with labels P, Q, and R indicating specific points in the flow. A key differentiates between energy and matter flow.
Table presenting four options (A, B, C, D) with corresponding substances for P, Q, and R, which are components of the ecosystem flow diagram.
Table presenting four options (A, B, C, D) with corresponding substances for P, Q, and R, which are components of the ecosystem flow diagram.