HL 1 Biology

5.1a Communities, Ecosystems

<Ecology>

Habitat: the environment inwhich a species normally lives or the location of a living organism

Species: a group of organisms that can interbreed and produce fertile offspring

Population: a group of organisms of the same species who live in the same area at the same time

Community: a group of populations living and interacting with each other in an area

Ecosystem: a community and its abiotic environment

Ecology: the study of relationships between living organisms and between organisms and their environment

<Food Sources>

Autotroph: an organism that synthesizes its organic molecules from simple inorganic substances

Heterotroph: an organism that obtains organic molecules from other organisms

Consumer: an organism that ingests organic matter that is living or recently killed

Detritivore: an organism that ingests non-living organic matter

Saprotroph:  an organism that lives on or in non-living organic matter, secreting digestive enzymes into it and absorbing the products of digestion.

===================DBQ======================================

Unexpected diets (p. 176)

1)  The Venus fly trap, ghost orchid, and euglena are autotrophic.

2) The Dodder (some are photosynthetic); euglena, ghost orchid (some are photosynthetic) are heterotrophic.

3) Out of these heterotrophic organisms, the  dodder and euglena are consumer;and the  ghost orchid is the saprotroph.

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