Plant Structure, Growth, Development Flashcards
Ovule becomes
seeds
Ovary becomes
fruit
Cotyledon
embryonic photosynthetic structure
Monocots
one cotyledon “scutellum”
Ex: corn
Eudicots
two cotyledon, “x-cross section” root
thick cotyledons- endosperm used up
thin cotyledons- endosperm still present
top to bottom
epicotyl -> hypocotyl -> radicle
Coleoptile
protects emerging stem
Coleorhiza
protects emerging roots
First step of seed germination
uptake of water (imbibition)
Roots
absorbs nutrient and water, anchors the plant
Stems
transport nutrients, support leaves
Leaves
photosynthesis
Dermal Tissue
“skin”
Vascular Tissue
transport
Ground Tissue
“filling” between dermal and vascular tissue
Cortex
“filling” exterior to vascular tissue
Pith
“filling” interior to vascular tissue
Parenchyma
metabolic function (photosynthesis), does not provide support
Collenchyma
alive at maturity, thickened cell walls provide light-duty support
Sclerenchyma
dead at maturity, heavy-duty support
Ex: pear texture
xylem
dead at maturity
phloem
alive at maturity
Primary Growth
increasing length (Apical Meristem)
Secondary Growth
increasing thickness/girth (Lateral Meristem)
