IB ESS HL 2.2.1 Ecosystem Sustenance Questions

Prepare for IB ESS HL 2.2.1 by analysing how solar energy enters ecosystems, moves in one direction and dissipates while matter is exchanged and cycled.

Exam points

identify solar radiation as the primary energy input to an ecosystem
explain energy flow and matter cycling through ecosystem stores, inputs, outputs and transformations
compare energy and matter transfers using conservation, heat loss, open-system exchange and biogeochemical cycling

[Maximum number: 1]

Figure:Example of a lake ecosystem

Figure 1 shows an example of a lake ecosystem.

Rooting flowering plants: producers
Birds: secondary and tertiary consumer eg kingfisher
Floating plants: producers eg lilies, water fern
Frog: secondary consumer

State the source of energy for this ecosystem.

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IB ESS HL 2.2.1 Ecosystem Sustenance Questions question 1