Exam 3 study guide

Exam 3 study guide - Part I Fungi heterotrophs 1. How do...

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Part I Fungi 1. How do fungi get their nutrients?  Feed on dead organic matter.  heterotrophs 2. What is a saprotroph?  Feeds on dead organic matter 3. Know the phyla   (Zygomycota- Asex and Sex-forms zygosporangia;  Chytridiomycota- Asex and Sex; Glomeromycota- Asex and Sex; Ascomycota-  Asex-conidia and Sex-ascospores; Basidiomycota-Sex Only-Basidiospores) 4. Know how each one reproduces sexually and asexually 5. Know the anatomy of fungi ( hyphae; mycelium; sporangiophores and  sporangia; etc.) 6. Mycorrhizal fungi: What is benefit to the plant, to the fungus?  Plant  receives nutrients; fungus gets a place to live  Part II Evolution of Land Plants 1. What were the problems faced by the first land plants?  Drying out- Developed cuticle, no water for sexual repro.- nonmotile and smaller  gametophytes, get sunlight- became multicellular,    What were the solutions  (adaptations) to these problems? 2. What algae are believed to be the direct ancestors of land plants (and  might have actually been the first land plants)?  Green algae (specifically  charophytes) 3. What is the evidence for your response to question 2?  Stacked grana in  thyllakoid disks, similar pigments, starch as storage, similar cell wall  components.
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4. What are the differences between these algae and the first true land  plants?  Complex organs- Roots, stems, leaves, stalk 5. How did plants solve the problem of growing larger to avoid competition  for light with neighboring individuals?  Plants became multicellular and grew  larger, Lignin. 5. When did the first land plants evolve?  490 mya   6. What fossil fuel is the product of the decomposition of large forests that  grew in the Mississippian and Pennsylvanian Periods?  Charcoal   How long  ago did these forests live?  360 mya Practice slides for life cycles Know the life cycles - make sure you know which  stages are haploid and which stages are diploid.   Where does meiosis occur?  What type of life  history, eg. sporic meiosis or zygotic meiosis.
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This note was uploaded on 06/23/2011 for the course BIO 112 taught by Professor Dr.dertein during the Spring '11 term at St. Xavier.

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Exam 3 study guide - Part I Fungi heterotrophs 1. How do...

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