ecology quiz 1 Flashcards
what is biotic factors
all living things in an ecosystem
what is ecology
is the study if how living things interact with nonliving things
what is a abiotic factor
all nonliving thing in an ecosystem
what is a niche
is the role an organism plays in an ecosystem the physical and biological conditions in which an organism lives and how it uses those conditions
what are autotrophs /producers
they use the suns energy to make their own food via photosynthesis
what are heterotroph
must consume other organisms for food
detritivores
they only eat dead matter
where does the energy within an ecosystem come from
energy flow from producers to consumers in a food chain
what is each step within a ecosystem called
trophic level
why is a food web more accurate then a food chain
because a food web shows all the possible food chains in a ecosystem
what do energy pyramids show
relative amounts of matter or energy present at each trophic level
what is biomass
the total amount of energy of living tissue which in a tropic level
why are fewer top pretores
because only 10% of energy is transferred from one level to the next and can only support a few
cellular respiration formula
gluoce oxygen make carbon dioxide water and energy
where does cellular respiration take place
it takes place in the mitochondria
photosynthesis formula
carbon dioxide water and sunlight and makes glucose and oxygen
where does photosynthesis take place
in the chloroplasts
stomara
pores in a leaf used for gas exchange
guard cells
responsible for hoping and closing the stroma
