Ecology (12C)

organism that must consume other organisms for energy

• autotroph

• heterotroph

a decomposer

• can create its own energy

• hunts for dead organisms

• breaks down dead/decaying organisms

• could be fungus or bacteria

this diagram shows ALL interrelated feeding steps within an ecosystem

• food chain

• food pyramid

• food web

• trophic system

this process removes carbon dioxide from the environment

• nitrification

• cellular respiration

• photosynthesis

• decomposition

which two biomolecules rely on nitrogen

• carbohydrates

• lipids

• protein

• nucleic acid

the uptake of nitrogen in the form of nitrates by roots of plants

• nitrogen fixation

• nitrification

• assimilation

• ammonification

which of the following does NOT put carbon dioxide back into the atmosphere

• decomposition

• combustion of fossil fuels

• cellular respiration

• photosynthesis

which element can be found in ALL FOUR major biomolecules

• carbon

• nitrogen

• phosphorus

• sulfur

the highest trophic level shown here is a

• tertiary producer

• primary consumer

• primary producer

• tertiary consumer

the level with the most amount of energy available contains the

• grasses and plants

• rabbits

• snakes

• bird