In Exercises 46 to 67, graph each function
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)
