Chapter 7 Flashcards
archaea
prokaryotes distinguished from bacteria on the basis of structural, physiological and other bio features
autotroph
organisms that can synthesize organic molecules using inorganic molecules and E form sun or inorganic molecuels
batesian mimicry
evolution of nonnoxious species ot mimic poisonous or inedible species
bundle sheath
structure that surrounds the leaf veins of C4 plants, made of cells wehre four carbon acids produced during carbon fixation are broken down to three carbon acids and co2
c3 photosynth
Photosynth pathway used by most plants and algae in which the product of the initial reaction is phophoglyceric acid or PGA, 3 carbon acid
c4 photosynth
cox is fixed in mesophyll cells by combining it with phosphoenol pyruvate, PEP, to produce 4 carbon acid.
-these plants more drought tolerant
cam photosynth
limited to succulent plants in arid/semiarid conditions, carbon fixation takes place at night when lower temps reduce rate of water loss during co2 uptake
-four carbon acids are stored till daylight where they’re broken down to pyruvate and co2
carnivore
heterotroph that eats animal
chemosynthetic autotroph
autotrophs that use inorganic molecules as a source of C and E
detritivore
heterotroph that eats dead plant matter
ecological stoichiometry
study of balance of multiple chemical elements in ecological interaction
functional response
increase in animal feeding rate, which eventually falls off , occurs in response to increase in food availability
herbivore
heterotroph that eats plants
heterotroph
organism that uses organic molecules as C and E sources
irradiance
level of light intensity, often measured as photon density
Isat
irradiance required to saturate the photosynthetic capacity of photosynthetic organism
mullerian mimicry
comimicry among several species of noxious organisms
-warning sign
net photosynth
total co2 uptake during photosunth minus co2 produced during respiration
optimal foraging theory
theory that attempts to model how organisms feed as an optimizing process
optimization
process that max’s or minds some quantity
organic compounds
chemical compound that contain carbon bound to other elements
photon flux density
number of photon of light striking square meter of surface each second
photorespiration
metabolic process occurring mainly in c3 plants under hot dry condition that reduce efficiency of photosynth
photosynthetic autotrophs
organisms that sues co2 as C and light as E source to synthesize OM
PAR
wavelengths of light b/t400 and 700 nm that photosynthetic organisms use as source of E
pmax
max rate of Photosynth for a particular species of plant growing under ideal physical condition
prokaryote
organimss with cells that have no membrane bound organelles
rhodopsin
light absorbing pigments in eyes of animals, bacteria, archaea
rubisco
enzyme that catalyzes initial rxn of Photosynth that combines co2 and ribulose biphosphate
size selection predation
prey selection by predators based on prey size
trophic biology
study of feeding biology of organisms