Photosynthesis Flashcards
what type of reaction is photosynthesis and what does this mean
endothermic, energy is taken
what are the three factors for photosynthesis
light intensity, temperature and carbon dioxide
how are root hair cells specialized for their job
very large surface area
what process is water absorbed into the plant roots by
osmosis
by what process are mineral ions absorbed by
active transport
what do phloem cells transport
food substances (mainly sucrose)
are phloem and xylem dead or alive
phloem- alive, xylem- dead
transport of sucrose is called
translocation
what do xylem cells transport
water and mineral ions
water (and mineral ions dissolved in the water) are moved by
transpiration
describe the structure of phloem cells
elongated cells with end walls
describe the structure of xylem cells
dead cells no end walls lignin
name two ways water is lost from a plants surface
evaporation and diffusion
name the peiece of equiptment used to estimate rate of transpiration
potometer
whats the equation for estimating transpiration rate using a potometer
distance moved by bubble/time taken
what are the reactants of photosynthesis
water, carbon dioxide
what do we call the tiny pores in the surface of a plant
stomata
what are the products of photosynthesis
glucose and oxygen
name three factors which affect the rate of transpiration
humidity light intenstity and temperature
name the cells that control the opening and shutting of the stomata
guard cells
