photosynthesis
chlorophyll
absorbs light energy
level of chlorophyll is individual to each plant this could be impacted by
pigment within chloroplasts
disease
enviromental stress
lack of nutrients
Translocation
Is the transport of sugar solutions up and down the cells
phloem cells transport the sugar in either direction
xylem cells transport the sugar
cell sap
sugar and water
energy
energy stores
no ends and is long hollow tubes
transports water and minerals
strengthened by lignin
transpiration
is the transport of water up and down the cells
rate of transpiration can vary depending on...
Temperature - warmer = higher rate of transpiration more likely to evaporate
Air flow - windy =increasing rate of transpiration
humidity = decreasing rate of transpiration
light intensity - brighter light = more photosynthesis
Once photosynthesis has been made to sugar they are carried to the rest of the plant by the phloem. water loss xylem brings water up the plant which can be lost at the top and bottom of the leaf this is why leaves have a waxy cuticle. Each stomata has guard cells either side of them these are to help with water loss. when the plant has water the guard cells will open when the plant is running out of water the guard cells will open.
photosynthesis equations
symbol equations
word equations
carbon dioxide + water - glucose + oxygen
click to edit
leaves is an organ of the plant and is the site of photosynthesis
spongy mesophhlly
pallisade mesophlly
lower epidermas
upper epidermas
Stomata
located in the lower epidermas, carbon dioxide difusses through the stomata
epidermal tissue
air gaps so gas can diffuse to the next section
most of photosynthesis happens pallisade cells are full of chloroplasts
sunlight passes through this is to get to pallisade cells
glucose
lots of glucose can make cellulose - strengthens the cell walls
lots of glucose can make starch - long term storage
cellular respiration - releases energy
amino acids to make protein