The Evolutionary History of Biodiversity Fungi Concept 2: Analyzing the diversity of bacteria, archaea, protists, and fungi (Ch 26, 27, 28, 31)

But first...Try This! (from Protista) Summarize the role of endosymbiosis in eukaryotic evolution. Defend why protists are not considered monophyletic, but rather polyphyletic (or possibly paraphyletic). Justify the claim that photosynthetic protists are among the most important organisms on the planet

But first...Try This! (from Protista) Summarize the role of endosymbiosis in eukaryotic evolution. Eukaryotes acquired mitochondria/chloroplasts after an early eukaryote first engulfed and then formed an endosymbiotic association with a prokaryote

But first...Try This! (from Protista) Defend why protists are not considered monophyletic, but rather polyphyletic (or possibly paraphyletic). In order to be monophyletic, protists would not only have to have a common ancestor and encompass all descendants from that ancestor. This is not the case.... Some are more closely related to plants, animals, or fungi, than to each other.

But first...Try This! (from Protista) Justify the claim that photosynthetic protists are among the most important organisms on the planet. ¼ of the worlds oxygen is produced by photosynthetic protists! Most aquatic/marine ecosystems depend on photosynthetic protists as the bottom of their food chain (producers) Phytoplankton Diatoms, algae, etc

Fungi The characteristics of Fungi. You must know: The characteristics of Fungi. Important ecological roles of fungi in mycorrhizal associations, and as decomposers and parasitic plant pathogens Refer to Ch 31 in Campbell and media resources Acetabularia ('mermaid's wineglass‘)

Characteristics of Fungi Multicellular heterotrophs Obtain nutrients by absorption Cell wall – chitin Hyphae, mycelium, septa Reproduction - spores

Ecological Roles Decomposers Mycorrizal fungi Lichens Parasites

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