Notes Feb 25th- Exams 2

Notes Feb 25th- Exams 2 - Ferns Large leaves for...

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Ferns Large leaves for photosynthesis Well developed root structure True internal vascular tissues (xylem and phloem) Underground form (prothallus) produces gametophytes Require water for fertilization because of swimming sperm Ferns generally found in shady places with wet soil to facilitate fertilization Club Moses (lycopodium)- found in moist woodlands commonly known as running cedar, predominate form is the sporophyte, which produces the sporangia similar life cycle to ferns Horsetails- typically wet environments, with fertile (gametophytes) and sporophytes (long stems with sporangia) Incorporate silicone dioxide crystals in structure of stem The Gymnosperms First plants with true seeds First plants with pollen as a gamete Adapted to more arid conditions on land Well developed root and vascular system Major group includes the conifers Characteristics of conifers- pine fir spruce (evergreen) Thick protective bark- many fire resistant Resins-antifreeze and insect deterrents Reduced leaves- needles, waxy
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This note was uploaded on 08/15/2011 for the course BIO 1005 taught by Professor Limcomb during the Spring '08 term at Virginia Tech.

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Notes Feb 25th- Exams 2 - Ferns Large leaves for...

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