Unformatted text preview: vey of Gymnosperms Task B1: Survey of Gymnosperms
• Phylum Gnetophyta • odd group of plants • examine dried Ephedra on display • Phylum Coniferophyta
• • • Pinus, etc. examine specimens on display more on this group in Task B 2 Task B1: Survey of Gymnosperms Task B1: Survey of Gymnosperms
• fossils • gynmosperms were once very dominant (before angiosperms) • example: most of the palmtree like plants depicted with dinosaurs are cycads that are prominent in fossils from that time • examine the fossils on display and note similarities with extant gymnosperms • NOTE: not all fossils and prints here are of gymnosperms! • life cycle Task B2: Pine Life Cycle / Seed Task B2: Pine Life Cycle / Seed Development • dissect pollen cone (found at your table)
• • • • remove one microsporophyll examine under microscope make slide of pollen grains and view them note terms and structures in lab manual • examine cones on display; compare to Figures 45 and 46 • Examine life cycle in Figure 46 • attend TA small group talk • Examine life cycle complete Figure 46 • prepared slides Task B2: Pine Life Cycle / Seed Task B2: Pine Life Cycle / Seed Development • examine slide of...
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