stems& leaves Flashcards
an area on stem where leaf (or leaf scar) and axillary bud located
node
are on stem between nodes
internode
a bud located just above node
axillary bud
what are the function of stems
support leaves
photosynthesis
storage
transport
area on stem between nodes
internode
leaf fell off here
leaf scar
at the tip of the stem
terminal bud
where the vein went into the leaf
vascular bundle scar
gas exchange
lenticel
where bud scales fell off
bud scale scars
located on side of stem in axii
axillary bud
leaf or leaf scar + axillary bud
node
the vascular bundles in monocots are
scattered
the vascular bundles in dicots are
arranged in a ring
which has no vascular cambium and no secondary growth
monocots
when the vascular cambium in dicots becomes active, it produces
phloem to the outside
xylem to the inside
which does a tree produces more of:
Secondary xylem
each year of growth in a tree is called
growth rings (annual rings)
heartwood
inner ring
sapwood
outer ring-closet to vascular cambium
what 3 things make up bark?
inner bark, cork cambium, outer bark
what makes inner bark?
produced by vascular cambium
what makes outer bark
produced by cork cambium
one year’s growth of wood
annual ring
large wood cells
spring wood
periderm
cork
produces outer bark
cork cambium
small wood cells
summer wood
what forms the dermal tissue in leaves?
stomata trichomes guard cells epidermis cuticle
there are two kinds of cells that makes up the ground tissue in leaves
palisada mesophyll
spongy mesophyll
spongy mesophyll
is involved in gas exchange
palisada mesophyll
is involved in light absorption
what is the vascular tissue commonly called in leaves
veins
name 3 resons why leaves are thought to turn red in fall
trap sugars
protective
sunscreen
dicot venation
netted
outer covering of plant
epidermis
control gas and water exchange
guard cells
columnar cell; light aborption
palisada mesophyll
leaf
blade + petiole
pore or opening
stoma
leaflets arise from central point
palmately compound
loosely packed cells; gas exchange
spongy mesophyll
monocot venation
parallel
leaflets in pairs
pinnately compound
waxy coating to prevent water loss
cuticle