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CH. 5 TISSUES & PRIMARY GROWTH OF STEMS (External Organization of…
CH. 5 TISSUES & PRIMARY GROWTH OF STEMS
External Organization of Stems
"stem"=axis
Nodes
leaves are attached
"shoot"=stem+leaves+flowers
Internal Organization of Stems
Primary Tissues
Vascular Tissues
Xylem
conducts water + materials
Tracheids
type of Sclerenchyma
Vessel Elements
type of Sclerenchyma
Phloem
distributes sugar + minerals
Sieve tube Members
type of parenchyma cells
Sieve Cells
type of parenchyma cells
Cortex
interior to epidermis
Epidermis
outermost surface
Vascular Bundles
XYLEM+PHLOEM
INTERIOR TO CORTEX
Stem Growth
Differentiation
Apical Meristems
stems grow longer
Subapical Meristem
Herbs
primary plant body
petunias
beans
snapdragons
wheat
corn
Woody Plants
secondary plant body
roses
magnolias
maples
oaks
boxwood
3 Classes of Plant Cells
Collenchyma
unevenly thickened walls
Sclerenchyma
primary + secondary walls
Parenchyma
thin primary walls
