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leaves (external structure of foliage leaves (must nots (lose lots of…
leaves
external structure of foliage leaves
photosynthesis
must nots
lose lots of water
let fungi in
let bacteria in
let epifoliar algae in
be too nutritious
be a wind sail
has to be cheap
waterproof
chlorophyll
chlorenchyma
#
leaf blade
harvests light
also called lamina
dorsal surface
(abaxial side)
ventral surface
(adaxial side)
petiole (stalk)
petiolate leaf
no petiole
= sessile leaf
sheathing leaf base
simple leaf
compound leaf
leaflets
petiolule
rachis
veins
reticulate venation
parallel venation
abscission zone
leaf scar
morphology and anatomy of other leaf types
succulent leaves
thick and fleshy
water conservation
sclerophyllous foliage leaves
extended lifetime
leaves of conifers
sclerophylls
needles
bud scales
small
rarely compound
spines
cacti
no blade
no mesophyll parenchyma
#
no vascular tissue
tendrils
grow indefinitely
cells sense contact
coils around objects
leaves with kranz anatomy
c4 photosynthesis
no palisade parenchyma
no spongy mesophyll
insect traps
aerenchyma
chlorenchyma
lamina is tubular in pitcher plant
internal structure of foliage leaves
epidermis
transpiration
epidermal cells
guard cells
stomata
trichomes
mesophyll
ground tissues
palisade parenchyma
spongy mesophyll
vascular tissues
midrib
lateral veins
minor veins
bundle sheathe
and extension
petiole
leaf traces
stipules
initiation and development of leaves
basal angiosperms and eudicots
leaf primordium
growth like the root tip in class
monocots
sheathing leaf base
root tip system
shoot apex
