Photosynthesis and leaf adaptions Flashcards
layers of a leaf
what is the palisade layer packed with
chloroplasts for photosynthesis
why is the upper epidermis transparent
to let sunlight through to the palisade layer
why does the leaf have a broad shape
to increase surface area to catch more light
why is the leaf thin
to allow rapid rate of diffusion for gaseous exchange
why does the leaf have a lot of stomata
to allow gaseous exchange to happen
what do guard cells do
control if the stomata is open or closed
what does the waxy cuticle do
reduces water loss by evaporation
where do plants get CO2 from
they absorb it from the air
where do plants get the water from
they absorb it from the soil
what is the food the plant has made from the CO2 & H20
Glucose
what do plants do with the oxygen produced in photosynthesis
release it into the air
word equation
carbon dioxide + water —– glucose + oxygen
by what process do gases enter and exit the plant
through diffusion
where do gases enter and leave the plant
through the stomata
why do plants need CO2
Because its needed for respiration. when CO2 levels are high, the plant can increase the rate of photosynthesis, meaning more glucose and oxygen is produced.
