limiting factors of photosynthesis

how does light impact photosynthesis

must be at a high intensity at the correct wavelength

what are the colours off the 3 main pigments

chlorophyll a = blue/green

chlorophyll b = dark green

carotene = orange

why are leaves not black

although they are the best absorber, the leaves would overheat

shorter wavelengths penetrate deeper into water, which is why plants are red as they absorb colours like blue

how does temperature impact photosynthesis

enzymes could denature, membranes become more permeable - disrupt e- transport chain and production of ATP, stomata close so less CO2 in, damage pigments

rubisco optimum temp

10-45C, must be variable as temperature can vary

how does CO2 impact photosynthesis

optimum is 0.4%

if this is any higher the stomata close as plants struggle to respire due to CO2 conc gradients being too high

how does water levels impact photosynthesis

lack of water causes stomata to close, meaning less CO2 in