Gas exchange in plants Flashcards
what are the three things the plant is made up of
that help it with gas exchange
stomata
spongy mesophyll
how is the stomata adapted
lots of them so large surface area for gas exchange
how is the spongy mesophyll adapted for gas exhange
lots of airspaces large surface area so gas’ can diffuse through
whats another adaptation on the plant cell
Think about diffusion distance
its thin so theres a short diffusion distance
xerophyte
a plant adapted for dry conditions
eg- cactus
what are the three things an xeropyte has
thikcer waxy culicle
sunken stomata
spines and needles
how is the thick waxy cuticle adapted
it increases the diffusion distance so there is less evaporation
how is the sunken stomata adapted
it taps the water vapour
protectes stomata from the wind so recuces water gradient
less eveporation
how do the spines and needles adapt for the plant
reduces surface area to vol ratio
