For the IB Biology course.

1. Communities & Ecosystems
IB Diploma Biology
Stephen Taylor
Photo: Wasp in Java, by Stephen Taylor ©

2. Assessment Statements Obj.
5.1.1 Define species, habitat, population, community, ecosystem & ecology. 1
5.1.2 Distinguish between autotroph and heterotroph. 2
5.1.3 Distinguish between consumers, detritivores and saprotrophs. 2
5.1.4
Describe what is meant by a food chain, giving three examples, each with at
least four linkages.
2
5.1.5 Describe what is meant by a food web. 2
5.1.6 Define trophic level. 1
5.1.7 Deduce the trophic level of an organism in a food chain & food web. 3
5.1.8
Construct a food web containing up to 10 organisms, using appropriate
information.
3
5.1.9 State that sunlight is the initial energy source for almost all communities. 1
5.1.10 Explain the energy flow in a food chain. 3
5.1.11 State that energy transfers are never 100% efficient. 1
5.1.12 Explain reasons for the shape of a pyramid of energy. 3
5.1.13
Explain that energy enters and leaves ecosystems, but nutrients must be
recycled.
3
5.1.14 State that saprotrophic bacteria and fungi (decomposers) recycle nutrients. 1
Assessment statements from: Online IB Biology Subject GuideCommand terms: http://i-biology.net/ibdpbio/command-terms/

8. Food webs show all of the feeding relationships within a habitat.
Read this research article and generate a food web.
The state of the oceans, part 2: Delving deeper into the sea's bounty.
John Tibbetts
This is a good thing.

9. Food webs show all of the feeding relationships within a habitat.
Read this research article and generate a food web.
The state of the oceans, part 2: Delving deeper into the sea's bounty.
John Tibbetts
This is a good thing.

10. Food webs show all of the feeding relationships within a habitat.

11. Food webs show all of the feeding relationships within a habitat.

17. i-Biology.net
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