Plant Vegetative Flashcards
flattened outgrowth of stem
leaves
part of leaf attached to the stem or branch; protects a bud in its axil
leaf base
part of leaf that connects the lamina with the stem
petiole
leaf that does not have a petiole
sessile
food manufacturer of the leaf; has veins; forms structural framework of the leaf
lamina
large center vein from which all other leaf veins extend
midrib
systems of tubes for the transport of nutrients and water
veins
ducts that bring water and minerals from the roots into the leaf
xylem
ducts that usually move sap
phloem
edges of leaves; assists in plant identification
margins
leaf arranged in a circle around the stem
whorled
undivided blade with a single axillary bud at the base of its petiole
simple leaf
blade divided into leaflets
compound leaf
petioles that are attached to the middle of the blade
peltate leaves
sessile leaves that surround and are pierced by stems
perfoliate leaves
first leaves produced by a germinating seed
cotyledons
leaflets are reduced in size; allows plant to cling other objects
tendrils
skin of the leaf; protects leaf from loss of too much moisture
epidermis
opened and closed by 2 guard cells; allows the plant to breathe and transpire
stoma
movement of water and minerals from the roots upward; movement of manufactured food down
stems
breathing pores of stem
lenticels
indicate where terminal bud has been located previous year
bud scale scars
show where leaf was attached; distance between the two represents one year of growth
leaf scars
separates the xylem and phloem and produces all new cells
cambium
hard, woody, pointed structures developed from terminal/axillary bud
thorns
woody curved sensitive structure formed from axillary/terminal bud
hooks
short underground stem with fleshy leaves attached
bulb
stems that cling to or wrap around other plants or structures
climbing
short, enlarged, underground stem
corm
a horizontal underground stem used mainly in reproduction, but also in storage
rhizome
horizontal, above ground stems to produce new rooted plantlets when they touch the surface
stolons/runners
swollen, underground stems used for storage
tuber
anchor plant and hold upright; absorb water and minerals from soil and conduct to stem
roots
produces new cells; protects roots as they push through soil
root cap
increases surface area of roots; facilitate the absorption of water and nutrients
root hair
easier transplanting
fibrous roots
large central roots with shorter branching roots
tap roots
hang down in mid-air and absorb water from rainfall
aerial roots
grow from unusual places on plants such as stems, leaves and even fruits
adventitious roots
grow down from lateral branches, branching in the soil
stilt roots