plant structures Flashcards
what is the word equation for photosynthesis
carbon dioxide+water=glucose+oxygen
what is the balanced chemical equation for photosynthesis
6CO2+6H2O→C6H12O6+6O2.
how does light affect rate of photosynthesis
as the light level increases, rate of photosynthesis also increases. after a certain point , rate of photosynthesis doesnt increase as CO2 or the temperature is a limiting factor
how does CO2 have an affect on the rate of photosynthesis
as CO2 increases, rate of photosynthesis also increses. after a certian point, rate of photosynthesis doesnt increase as light level or the temperature is a limiting factor
how does temperature have an affect on the rate of photosynthesis
increasing temp will increase rate of photosynthesis upto a certain point. after that, enzymes will become denatured
what are some adaptations of root hairs
they have root hair cell which will increase the surface area so it can absorb more water and mineral ions
what are phloem tubes
-tubes made of living cells
-does translocation
-it has end walls
what do phloem tubes mainly transport
sucrose
what are xylem tubes
-made of dead cells
-does transpiration
-it has no end walls
what doe xylem tubes mainly transport
water and mineral ions
what is the process of transpiration
-this is the loss of water from the plant
-the plant loses a small amount of water so more water will then be absorbed
-this water will be absorbed in the roots and will be transported throughout the plant via xylem tubes
what is stomata and why is it used
these are tiny pores on the surface of a plant. they allow CO2 to diffuse in and oxygen to diffuse out of the plant
how does the stomata open
guard cells become swollen with water (turgid) which will open the stomata
how does the stomata close
water in the guard cells will evaporate which means that the guard cells become flaccid.
what is the palisade layer in leaves
this layer has lots of chloroplasts. they are near the top of the leaf so they can get the most light