Wood Flashcards
What formation are x and p in in a docot
ring
What formation are x and p in in a monocot
scattered
Do dicots have abundle sheath
no
bundle sheath
layer of cells to surround the vasc bundle
Only in monocots
What is the function of the bundle sheath
to have control over water regulation
WHat type of cells are in the bundle sheath sclerenchyma
sclerenchyma mostly
Are secodnay x and p in monocots
no
Is the pith in monocot or dicot roots
monocot
Is the pith in monocot or dicto stems
dicot stems
Is there a vasc cambium in monocot roots
yes
*BE ABLE TO LABEL MONO DI ROOT AND STEM!!
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Where is the cortex in stems
between epidermis and phloem
where is the cortex in roots
between endodermis and epidermis
What is the bark made up of
cork cells phloem periderm
Where are the oldest rings in wood
the center
WHat type of wood make up the rings
spring and summerwood
What type od cells would you see in the rings
xylem
parenchymal cells
sclerenchyma cells
Springwood
secondary xylem
large vessel elements = take up more water when water is abundant
summer wood
more tracheids bc less water in summer
Where is the heartwood located
center of tree
old trees
is heartwood considered alive
no bc the vessels and tracheids are dead
Why are the cells in heartwood dead
prevent fungal infection and disease
what is the plug of a vessel cell celled
tylosis
Where are tannins found
heartwood
what do tannins do
antimicrobial properties
tree age affects it
barrel ages wines
Where is sapwood found
outer tree lighter color
Where is the active xylem found in an older tree
sapwood
Why is sapwood considered alive
bc parenchyma was initially alive
connects water and minerals
hardwood
angiosperms
deciduous
more fiber
softwood
conifers
