Topic 5.1 Communities and Ecosystems.

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Presentation transcript:

Topic 5.1 Communities and Ecosystems

5.1.1 Define…

5.1.2 Distinguish between autotroph and heterotroph

5.1.3 Distinguish between consumers, detritivores and saprotrophs Detritivore: an organism that ingests non-living organic matter. Saprotroph: an organism that lives on or in nonliving organic matter, secreting digestive enzymes into it and absorbing the products of digestion. Consumer: an organism that ingests other organic matter that is living or recently killed.

5.1.4 Describe what is meant by food chain

5.1.5 Describe what is meant by food web

5.1.10 Explain the energy flow in a food chain

5.1.10 Explain the energy flow in a food chain

5.1.12 Explain reasons for the shape of pyramids of energy The narrowing shape illustrates the gradual loss of energy progressing along the links of a food chain to higher tropic levels