Presentation on theme: "A mushroom goes into a bar. The bartender looks at him and says, “get out of here, we don’t serve your kind.” The mushroom says to the bartender, “Why."— Presentation transcript:
A mushroom goes into a bar. The bartender looks at him and says, “get out of here, we don’t serve your kind.” The mushroom says to the bartender, “Why not, I’m a FUN GUY!”
We will study four phyla of fungi classified by their structure and method of reproduction Zygomycota Ascomycota Basidiomycota Deuteromycota (not pictured) Slime molds
Characteristics of all fungi Heterotrophs Eukaryotic Multicellular (except yeast) Cell wall made of chitin External digestion of food Main body is haploid Fungi can be Decomposers (saprobes) Parasites Carnivores Mutualistic (beneficial)
Did you know that each year the Mycological Society of San Francisco hosts one or two mushroom shows (traditionally called 'fungus fairs'). At the show you can see hundreds of species of fungi on display along with exhibits on ecology, mycophagy, toxicology, and cultivation. There is a fungus fair! dex.html
What is there to like about Fungi? A LOT! Decomposers Symbiosis Food
Edible fungi Giant puff ball Wild mushrooms To prevent mushroom poisoning, mushroom gatherers need to be very familiar with the mushrooms they intend to collect, including knowledge of the toxic species that look similar to these edible species. Mushroom poisoning (toxins) initially cause severe abdominal cramping, vomiting, and watery diarrhea, and then lead to liver and kidney failure. Therapy is aimed at decreasing the amount of toxin in the body.
Structure of fungi Filaments = hyphae All hyphae together = mycellium Reproductive structure = fruiting body
Reproduction in fungi Asexual = hyphae breaking off or production of spores Sexual = + and – mating types meet. Each forms a gametangium. The haploid nuclei fuse and form a diploid zygote. Meiosis then forms haploid nuclei.
+ and – mating types come together Nuclei fuse to form diploid zygote Haploid nuclei formed in gametangia
Phylum Zygomycota Common molds Includes black bread mold
Zygospores = spores formed in sexual reproduction Stolon = stem like hyphae Sporangium produces spores Sporangiophore holds up sporangium ASEXUAL SEXUAL Rhizoid = root like hyphae