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Plant Physiology

Horticulture 1 -- Knowbook 2

Annual plant that completes its life cycle in ONE year
Biennial plant that completes its life cycle TWO years
Perennial plant that completes its life cycle in 3+ years
Deciduous plant that loses its leaves during the dormant season
Evergreen plant that retains its leaves during the dormant season
Turgid plant that is swollen or filled with moisture
Wilted plant that is limp because it does not have enough moisture
Dormant a stage when a plant rests or grows very little
Botany part of biology that deals with plants
Cool season plant plant that grows best in spring or fall
Warm season plant plant that grows best in summer and early fall
Petiole the leaf stalk that connects the leaf to the stem
Midrib large center vein in a leaf
blade large, flat part of a leaf
veins structural framework of the leaf
Margin edge of the leace
apex leaf tip
upper and lower epidermis skin of the leaf that prevents the loss of too much moisture
stomates small openings under the leaf for breathing or transpiration
guard cells Surround the stomates and regulate the open and close of stomates
chloroplasts small green particles that contain chlorophyll and are necessary for photosynthesis
photosynthesis process by which plants capture sunlight and use it to convert carbon dioxide and water into food
Respiration converts sugars and starches into energy
transpiration release of water vapor from the leaves of plants. Also cools the plant
Sessile leaves without a petiole
Rugose bumpy leaf blade
tomentose leaf has lots and lots of soft hairs
pubescent leaf has some small hairs but not much
glabrous leaf has no hair at all
entire smooth leaf margin
serrated jagged margin
dentate teeth like margin
crenate round, uniform margin
hirsute sharp, splinter-like hairs
Tenticels breathing pores found on stems and branches
Bud scale scars where terminal buds have been located
leaf scar where a leaf was once attached
terminal bud bud on end of stem
axillary bud located at the axil of the leaf
lateral bud bud on the side of stem
Xylem tissue that carries water and nutrients up from the roots to the stems and leaves
Phloem tissue that carries water and nutrients down from the roots to the stems and leaves
cambium a thin, green, actively growing tissue between bark and wood and produces all new stem cells
bark old inactive phloem
heartwood old inactive xylem
sapwood new active xylem
monocots stems that have vascular bundles of xylem and phloem
dicots stems that have a tube of xylem and a tube of phloem
translocation movement of water and minerals through the plant
Created by: Jsbrewer