Lab 2 Glossary Flashcards
Abscission
the dropping off of leaves, flowers, fruits and other plant parts, usually following the formation of an abscission zone.
Blade
Can be used interchangeably for the lamina of a leaf, or the broad flat part of an algal thallus.
Compound leaf
A leaf whose blade is devided into several distinct leaflets.
Concealed buds
Accessory axillary buds which remain dormant unless the exposed axillary bud is destroyed.
Cotyledon
Seed leaf; generally stores food in dicotyledons and absorbs food in monocots.
Deciduous
Shedding leaves at a certain season
Dicotyledon
plants with 2 cotyledons, net veined leaves, and flower parts in multiples of four or five
Dorsal
the surface facing away from the stem to which the leaf or other structure is attatched
Epiphyte
An organism that grows on a plant but is not parasitic.
Eustele
Ring of discrete vascular bundles typical of dicotyledons and gymnosperms
Halophyte
plants that grow in saline environments
Internode
region of stem between two successive nodes
Leaf gap
Region of parenchyma tissuein the primary vascular cylinder above the point of departure of a leaf trace.
Leaf trace
The strand of vasvular tissue linking the vascular bundle in the stem with the bundle in the base of the leaf.
Meristem
region where new cells are formed.
Monocotyedon
a plant whose embryo has one cotyledon, parrallel leaf veins and flower parts in multiples of 3
node
part of the stem where one or more leaves are attatched
Petiole
the stalk by which a leaf is attatched
Rhizome
An underground horizontal stem
Stolon
An above ground horizontal stem
sessile
Attached directly by the base - referring to a leaf lacking a petiole or a flower or fruit lacking a pedicel
Simple leaf
a leaf with an undivided blade, as opposed to a compound leaf.
Ventral
the surface facing the stem to which the leaf or other structure is attached (top surface of leaf)
