chapter 12 Life in the ocean Flashcards
living things can
capture, store, transmit energy, and reproduce
photosyntheses
certain bacteria, algae, & green plants use sunlight to create glucose (releases oxygen)
chemosynthesis
some bacteria and archaea use chemical energy to create glucose
Primary productivity
Synthesis of organic molecules from inorganic ones
Through photosynthesis or chemosynthesis
Trophic pyramid
shows feeding relationship
autotrophs
organisims make their own food with photosynthesis or chemosynthesis
heterotrophs
get food from other organisms (can not make their own food)
Primary producer
can use energy rich chemicals to produce their own food (Autotrophs) bottom of tropic pyramid
(photoplankton)
primary consumers
Heterotrophs that eat autotrophs (primary producers) concumer of primary producers (zooplankton)
secondary consumers
heterotrophs that consume primary producers or other secondary consumers (larve and smaller fish)
top consumers
consume primary sonsumers heterotrophs at top usually carnivores
food web
Group of organisms linked by complex feeding relationships Almost always have feeding choices
Limiting factor
Physical or biological factor that limits normal
action of organisms
photic zone
uppermost layer of sea water where light is present
aphotic zone
benieth photic zone no light
euphotic zone
Upperpartofphoticzone with enough light for photosynthesis
Ectothermic
organisms
internal temperature equals external temp (cold blooded)
endothermic organisms
stable, hight internal temperature (warm blooded)