BIOL 184 Study Guide - Final Guide: Hexapoda, Rock Tripe, Eumetazoa
26 Jan 2018
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Lab 5: origins of plants: mosses, ferns, horsetails and conifers. Relative security of water and lack of structural suppose. Did not have the ability to disperse through dry air without harm. Reproduction was much more difficult due to differences in fertilization. Adaptations allowing plants to survive in terrestrial environments. Roots allowed shoot system to grow taller acted as organs to absorb water. Sporocytes or spore mother cells undergo meiosis and generate haploid cells. Some members of this group retain female gamete (egg) on the parent. Cells from the haploid parent grow around, protech and nourish the large unicellular zygota. Asexual spores are produced in these sporangia. A diverse group of fungi including microscopic yeasts, relatively large, edible morel and truffles, and small black leaf spot fungi. Sexual stage of their lifecycle involves production of a sac (ascus) with eight haploid ascospores. Produces four haploid basidiospores on a club-shaped basidium. Symbiotic association between photosynthetic mico-organism and a fungus.
