Chapter 3: Ecology Flashcards
biosphere
region of Earth where life resides, combination of all ecosystems
producer/autotroph
organism that uses energy of sun to produce usable forms of energy
photosynthesis
process by which producers use solar energy to convert to carbon dioxide and water into glucose
cellular respiration
process by which cells unlock energy of chemical compounds
aerobic respiration
process which cells convert glucose/water/oxygen into energy, carbon dioxide, and water
anaerobic respiration
process by which cells convert glucose into energy in the absence of oxygen
consumer/heterotroph
organism that needs to get energy from consuming other organisms
herbivore/primary consumers
consumer that eats producers
carnivore
consumer that eats other consumers
secondary consumer
carnivore that eats primary consumers
food chain
sequence of consumption from producers through tertiary consumers
food web
complex model of how energy moves between trophic levels
trophic levels
successive levels of organisms consuming one another
tertiary consumers
carnivore that eats secondary consumers
scavenger
organism that consumes dead animals
detritivore
organism that breaks down dead tissue and waste into smaller particles
decomposer
fungi/bacteria that convert organic matter into small elements that can be recycled back to the ecosystem