BIOA02H3 Lecture Notes - Taraxacum Officinale, Germination, Plant Nutrition
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BIOA02H3 Full Course Notes
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Document Summary
From tree to seed: transport in plants, plant nutrition and soils, plant defense, plant life on the edge. Lecture 5 notes (from seed to tree: seed to germination, seed dispersal parent-offspring competition for space ingenious adaptations: wind, water, ant, mammal, internal, hitchhiking, external hitchiking: Explosive self dispersal (e. g jewelweed-touch me not) Hairs-e. g common in milkweed (asclepias xyriaca), virgin"s bower (clematis virginiana) Parachute-e. g. dandelion (taraxacum officinale), goat"s beard (tragopogon protensis) Winged-e. g. sugar maple (acer saccharum), manitoba maple (a. negundo), External hitchhiker-e. g. beggar"s tick, cleavers, tick trefoil, burdock (arctium minus) Internal hitchiking-e. g. blackberry, cherry, cohosh, pin cherry, solomon"s seal, dollseyes, ca mayflower (through color luring). Ant disperal: elaiosomes(caruncle): rich in lipids and proteins attached to seed for symbiotic relationiship. The plant can disperse seed, ant achieves food: e. g white trillium, red trilliu, bloodroof, trout lily. Water>internal hitchhike>external>wind>mammal>external>ant>explosive: seed anatomy (angiosperm) contains plant embryo covered with testa-seed coat. Endosperm: food for embryo, food for disperser, food storage inside seed, not part of embryo.
