Week One Notes for General Biology III
Week One Notes for General Biology III BIO 193
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This 1 page Class Notes was uploaded by Wryan Mitchell on Wednesday April 6, 2016. The Class Notes belongs to BIO 193 at DePaul University taught by Dr. John Dean in Winter 2016. Since its upload, it has received 19 views. For similar materials see General Biology in Biology at DePaul University.
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Date Created: 04/06/16
BIO 193-301 Week One Notes • Evolution of plants o Terrestrial plants v. aquatic plants o Benefit for terrestrial plants ▯ More nutrients were on land than in water o Issue for terrestrial plants ▯ Not as much water o Derivation from green algae ▯ Some plants and (green) algae have similar characteristics ▯ Biggest distinction is that plants are terrestrial • Physical characteristics of plants o Cuticle o Stomata o Multicellular gametangia (Archegonia and Antheridia; NOT ALL PLANTS HAVE THESE, DON’T SEE THESE IN FLOWERING PLANTS) ▯ Archegonia ▯ Antheridia o Protected embryo (Embryophytes) o Sporangia o Spores (ALL PLANTS HAVE THESE) o Secondary Products: lignin, sporopollenin ▯ There are two important functions of lignin o Vascular tissue (xylem and phloem; NOT ALL PLANTS HAVE THIS) o Pollen (NOT ALL PLANTS HAVE THIS) o Seeds (NOT ALL PLANTS HAVE THIS) o Fruits (NOT ALL PLANTS HAVE THIS) • Important four events in plant life history o Terrestrial adaptations (ALL PLANTS) o Gaining vascular tissue (SOME PLANTS) o Gaining seeds (SOME PLANTS) o Development of flowering plants (SOME PLANTS) • Four groups of plants o Non-vascular o Seedless o Gymnosperms o Angiosperms • Three phyla of nonvascular plants o Hepatophyta o Bryophyta o Anthocerophyta • Alternation of generations • Sporophytes are plants that make spores • Gametophytes are plants that make gametes (eggs and sperms)
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