Bundles are distributed throughout the cortex no

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Unformatted text preview: der Monocots Dicots Flowers Petals and sepals usually in groups of three Petals and sepals usually in fours or fives Examples Liliaceae (lilies & onions), Poaceae (grasses & cereals), Bromeliaceae (pineapples), Orchidaceae (orchids), Arecaceae (palms), Cyperaceae (sedges) Rosaceae (apples, roses), Fabaceae (beans), Brassicaceae (mustard), Rutaceae (citrus), Apiaceae (carrots, poison hemlock), Cannabaceae (marijuana), Fagaceae (oaks) Sadava p. 647: "Twelve seed plant species stand between our species and starva>on...” rice - monocot (>50% of world popula>on depends on rice) coconut - monocot (most widely used oil; mostly not for food) corn (maize) - monocot potato - dicot sweet potato - dicot (family Convulvulaceae) - note this is different from "true yams" (monocots; Dioscoraceae) •  cassava (tapioca) - dicot •  sugarcane - monocot •  sugar beet - dicot •  soybean – dicot •  common bean - dicot •  banana – monocot [note: we are using dicot and eudicot interchangeably] •  •  •  •  •  Mesozoic Cenoz oic Animals, fungi, plants grasses hominoids Fungi TerDary Cretaceous 65 144 Jurassic Triassic Animals Land plants 213 248 Permian 286 Palaeozoic Carboniferous Devonian Silurian Ordovician Cambrian Precambrian 354 412 435 492 570 Flowering plants small, annual 40 species; 39 na>ve to N.America 1 na>ve to S. America Pain>ng by Frederick Pursh from specimen coll. by Meriwether Lewis, Wm Clark Photos: Brent Miller, Douglas Taylor, Alfred Brousseau, Keir Morse, Arthur Bazell, Charles Webber, Ed Lowry annual vs perennial •  annuals, must be grown from seed each year •  biennnials - two year life cycle –  e.g. carrots (oBen grown as annuals) •  perennials, persist in some form (shrub, bulb) and regrow or reflower each year •  a single muta>on can change an annual into a perennial plant structure buds: embryonic shoots axillary buds – where leaves meet stems apical buds – >ps of stems and branches where new growth takes place another kind of root: adven>>ous can emerge from various parts of some plants; adapta>on for expanding vegeta>ve growth hMp:// plant_growth/Angiosperms/ID/3%20root %20systems.jpg stem modifica>ons leaf types •  leaves are the primary areas of photosynthesis •  many leaf modifica>ons in various species, e.g.: –  cactus spines –  pine needles...
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This note was uploaded on 10/02/2013 for the course BIO 201 taught by Professor True during the Spring '08 term at SUNY Stony Brook.

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