Stem Lab Flashcards
what are the two (inner and outer) layers of the shoot apical meristem?
outer tunica, inner corpus (dividing in different directions)
what are the three functions of the stem?
- support leaves for ps
- transport of xylem and phloem
- modifications based on environment
from which layer of the shoot apical meristem is the protoderm derived?
almost entirely from outermost cells of tunica layer
from which layer of the shoot apical meristem are the procambium and ground meristem derived?
combination of tunica and corpus
what is a node?
area of stem where leaf attaches
what is an internode
region of stem between nodes
where are the leaf and axillary bud located in relation to each other?
leaf is always below axillary bud
how is branching in the stem different from branching in the roots?
pre-determined by nodes
how many leaves / node in alternate leaf arrangement?
1
how many leaves / node in opposite leaf arrangement?
2
how many leaves / node in whorled leaf arangement?
3/more
what is apical dominance?
the main shoot inhibits growth of other shoots; grow tall rather than wide
as a plant grows, what happens to the internodes?
become larger
is there a shoot cap like there is a root cap?
no, because air is not as dangerous to navigate
what type of cells make up the gorund tissue?
parenchyma
