IB Biology HL C4.2.1 Ecosystems As Open Systems Questions

Interpret ecosystem and mesocosm diagrams to distinguish energy dissipation from matter inputs, outputs and nutrient recycling in IB Biology HL C4.2.1.

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Distinguish open ecosystems from closed systems by identifying exchanges of energy and matter with the surroundings.
Trace energy flow and inorganic-nutrient transfers in ecosystems, explaining that energy is dissipated while matter enters, leaves and recycles.
Interpret mesocosm or ecosystem diagrams to identify inputs, outputs and recycling pathways for energy, matter and nutrients.

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Study C4.2.1—Ecosystems as open systems conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

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An investigation into food web interactions was conducted in mesocosms in the Mediterranean Sea, off the coast of France. The effects of the addition of soil and fish on bacterial populations were tested.

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Each of the mesocosms is an open ecosystem. State the property that makes the mesocosms open ecosystems.

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IB Biology HL C4.2.1 Ecosystems As Open Systems Questions question 1