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lab test #1

TermDefinition
Leaf plant organ that carries out photosynthesis
Epidermis(leaf) Single layer of cells on top/bottom of leaf (protects leaf from drying out/UV rays/bacteria)
Cuticle layer of wax secreted by epidermal cells (Wax proofing reduces water loss)
Stomates Allow gas transfer in/out of leaves
Guard Cells Surround stomates(one on each side) Regulate opening/closing
Parenchyma Cells In a leaf located between upper/lower epidermis (carry out photosynthesis/ used as storage
Palisade Parenchyma Tightly packed (near top of leaf)
Spongy Parenchyma Loosely packed
Palisade Mesophil A tissue (Made up of many Parenchyma cells/rod-shaped)
Spongy Mesophil A tissue (Made up of Spongy Parenchyma/spaces between cells)
Vein Two types of tissues/both transport fluid (Xylem/Phloem)
Trichomes Extensions of epidermal cells (deter predators/help trap water vapor on surface)
Buliform Cells Large cells on upper epidermis (help the leaf to curl to create shade and cool it off/minimize water loss)
Blade Flat leaf part
Petiole Stalk like part that connects leaf to stem
Cotyledon Leaf that was first to emerge after growing (stores nutrients before plants germinate)
Hypocotyl The part of the shute of the plant below the cotyledon
Flower Plant organ which aids in reproduction
Stigma Top part, Pollen attaches to this part
Style Stalk like part, transfers sperm to egg (under stigma)
Ovary Produces egg within ovule (under style)
Pistil All female parts collectively
Anther Top male part (produces pollen)
Filament Stalk like part (Holds anther up so pollen is more likely to attach)
Stamen All male parts collectively
Petals Attract pollinators (colorful to attract)
Sepals Protects flower bus before flower opens
Root Plant organ designed for water absorption and anchoring
Root Cap Bottom most part of plant, protects the apical meristem from abrasion
Apical Meristem Small circular part center above the root cap, carries out cell decision to replace root cap cells that got rubbed off/ allow root to get longer
Protoderm Matures into the epidermis (single layer of cells one layer above root cap cells)
Epidermis(root) Increase surface area for water absorption, protects UV light. fungi
Procambium Cell layers directly above the apical meristem, matures into vascular tissue
Root hairs Extensions of epidermal cells that aid in water absorption
Ground Meristem Left and right of pro cambium, matures into ground tissue
Ground Tissue Above the ground meristem, stores starches
Endodermis 1 layer of cells that forms a ring around the vascular cylinder and regulates what gets into the vascular cylinder
Zone of cell division Bottom most part of the root (Apica, Protoderm, Ground Meristem)
Zone of Elongation Middle Zone (Cells Elongate)
Zone of Maturation Top most zone (Xylem can now transfer water, Phloem transfer sap)
Stem Lack stomates/epidermis, Vascular tissue on outside
Collenchyma Cells In between the epidermis and vascular bundles in dicot stem
Sclerenchyma Cells Very thick cell walls, top of vascular bundle
Pith Filled with Parenchyma Cells in dicots (storage)
Cortex Space in between epidermis and vascular bundles
Bark Inner bark=Phloem(transport sap)
Springwood Larger cells
Summerwood Smaller cells
Lateral Meristem (vascular cambium) New cells form here/ make xylem and phloem each growing season
Xylem found in wood transport water
Phloem found in inner bark transport sap
tracheids Cells that transport water in non-flowering plants
Vessel Members Big cells in xylem that transport water in flowering plants
Sieve Elements Transport sap in inner bark (lose nucleus when mature, no longer have DNA to make protein)
Companion Cells Make protiens for sieve elements (small cells attached to sieve elements in angiosperms)
Albuminious Cells Make proteins for sieve elements in gymnosperms
Resin Ducts Big holes found in outer bark layer of gymnosperms, transports resin
Gymnosperm Non-flowering plant that produces seeds on cones (pinecones) No vessel member, has albuminous cells
Angiosperm Flowering Plant which produces seeds in fruit No resign ducts, has companion cells
Created by: eriksherf
 

 



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