plant structure Flashcards
fibrous root system
monocot and seedless vascular plants; embryonic root dies and thin roots spread below the surface
taproot system
most eudicots and gymnosperms; one main vertical root develops from embryonic root
rhizomes
large monocots; horizontal underground stems
pneumatophores
air roots; mangroves with roots projecting above surface of water
simple leaf
undivided blade with lobes and axilary bud at base of petiole
compound leaf
consists of multiple leaflets with bud only at base of petiole and not leaflets
stele
vascular tissue of a root or stem
protoplast
cell contents of plant exclusive of cell walls
cork cambium
replaces the epidermis with periderm, which is thicker and tougher
endodermis
innermost layer of cortex in a root
pericycle
outermost layer in vascular cylinder where lateral roots arise from
palisade parenchyma
palisade mesophyll; one or more layers of elongated cells on upper leaf
secondary growth
xylem grows in and phloem grows out
