VIEWS: 5 PAGES: 27 POSTED ON: 8/18/2011
Plants Overview MUST BRING IN A FLOWER TOMORROW!!!! Nonvascular Plants Hornwort Usually small plants Everything transported by diffusion and osmosis Life Cycle of Nonvascular Plants (MOSS) Vascular Plants (Seedless) Some early vascular plants only reproduce with spores and not seeds Ferns are examples of these Spores (how a fern reproduces) Life Cycle Vascular (seed) plants Two types Gymnosperms Angiosperms Monocots Dicots Gymnosperms Plants that make seeds that do not develop into a fruit Usually bear pollen or seed cones Gymnosperm Life Cycle Angiosperms Flowering Plants and trees More than 230,000 species and 300 families!!! Monocots Seeds produce a singe cotyledon (seed leaf) Parallel veins Flowers usually in multiples of 3’s Ex. Grasses Dicots Flowering plants produce 2 cotyledons (seed leaves) Leaf veins form a network Flower parts in multiples of 4 or 5 Plant transport Water and nutrients transfer through the xylem Red circles in the middle Transpiration Water lost through the stomates Guard cells help to regulate the loss of water Translocation Phloem moves sugar made in the leaves or roots (source) to a storage place (sink) Process is called translocation Green cells FLOWER POWER • Why are angiosperms so successful and diverse? • What are the structures of the flower? • How are the structures best suited for their functions? • USE YOUR TEXTBOOK!!! Flowers 4 main parts Petals (together make the corolla) Sepals (together make the calyx) Stamens (male parts; produce pollen) Pistils (female parts) Stigma Style Ovary Fruits We think of it as yummy, healthy food Botanist definition is ripened ovary of a flower Peas, eggplant, tomatoes, cucumber, squash, peppers are all really fruit Simple Fruits Created from a single ripened ovary 2 Types Dry Fleshy Aggregate Fruits Come from a single flower but multiple ovaries developing in that flower Multiple Fruit Formed from several flowers of each having an individual ovary Seeds Monocot vs. Dicot Questions to answer 1. How is a flower like a baboon’s butt? 2. How is plant reproduction similar to animal reproduction?
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