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Transcript
TOUR OF A PLANT ALL YOU NEED TO KNOW AND MORE If you don’t leaf me alone, I’ll think you’re a stump; but if you wood bark, you might be able to get to the root of my problem. PLANT TAXONOMY REVIEW KINGDOM PLANTAE DIVISION BRYOPHYTA (MOSS) DIVISION TRACHEAPHYTA SEEDLESS (FERNS) SEED PLANTS GYMNOSPERMS ANGIOSPERMS MONOCOTS DICOTS WKBK P.327 Plants like to flaunt their sex organs. Why is this not nasty? Mommy’s Little (reproductive) Helpers Blastula - Is to as Is to A Seedy Slide Kicking Your Kids Out of the House Still Kicking…… Overview of Alternation of Generations General Plant Life Cycle Bryophyte (moss) Life Cycle Fern Life Cycle Is Meiosis the same in males & Females? DOUBLE FERTILIZATION How do plants reproduce? VEGETATIVE PROPAGATION What do these two words mean? Vegetative Organs=roots, stems, leaves Sex Organs=flowers Strawberry: Runners Plant Cuttings Potatoes Raspberry Canes No Plant Puberty-But Still Plenty of Hormones Auxins Gibberellic Acid Abscisic Acid Cytokinins Ethylene Effects of Gibberellic Acid TROPISMS ThigmoPhotoGeo/graviPositive or negative Phototropism Geotropism Thigmotropism in Mimosa MONOCOTS DICOTS SEED DEVELOPMENT Monocot vs. Dicot Babies Awwww, A BABY RADISH!! Germination What is germination? What is required for germination? What is NOT required? Plant Tissues Xylem Phloem Epidermis Cortex Tree Transport How’d That Water Get Up There? Transpiration Review What? Where? How? Why? Plants are very TACT-ful T A C T Meristems -Regions of cell division/growth within a plant. Plants have 2 apical meristems Think about where would these be (where does the plant grow from? Shoot root More Tissues….. Pith Wood Bark Cork Cambium Vascular Cambium Vascular Cambium • VC- an example of a lateral meristematic region- surrounds the pith & xylem. Produces secondary xylem & phloem Cork Cambium • CC- also an example of a lateral meristematic region – replaces the epidermis during secondary growth Tall Tree Trunks Tell Tales So, where does the mass of a plant come from? The Darkness (amount of the night) is actually more important then the amount of light! All you need to know about alternation of generations Moss Life Cycle Fern Life Cycle Gymnosperm Life Cycle Angiosperm Life Cycle Monocot Stem (Zea mays) Monocot Vascular Bundle Dicot Stem (Davidius webbus) Cross Section of a Leaf Topic Clean-Up Carnivorous plants Primary vs. Secondary growth Xylem = dead cells (tracheids/vessels) Phloem = mostly living (sieve tubes/companion cells Meristematic tissue = growth tissue