class notes 2.24

class notes 2.24 - Biology 1006: 2/24/10 Horsetails: found...

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Biology 1006: 2/24/10 Horsetails: found in typically wet environments, with fertile (gametophytes) and sporophytes (long stems with sporangia) o Incorporates silicone dioxide (glass) crystals in structure of stem o Could be as tall as 3 feet Club mosses: found in moist woodlands, commonly known as running cedar, predominate form is sporophyte, which produces the sporangia o Similar life cycle to ferns o Lycopodium- lycos= wolf, podium=foot Gymnosperms (old plants, have a long fossil record, gymos-sperm and naked-seeds): first plants with true seeds, first plants with pollen as a male gamete(because was in a dry condition so the sperm did not have water to swim in), wind pollinated so there are vast quantities of pollen produced, adapted to more arid conditions on land, well developed root and vascular system, major group includes the conifers (pines, spruce, fir, Cyprus) o Ginko biloba- ginko tree, can break down carbon monoxide so they are ot effected by living in a city environment
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This note was uploaded on 01/18/2012 for the course BIO 1006 taught by Professor Staff during the Spring '10 term at Virginia Tech.

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class notes 2.24 - Biology 1006: 2/24/10 Horsetails: found...

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