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SBI 3C Fungi Overview
Transcript of SBI 3C Fungi Overview
Then the mushroom says, "Why not, I'm a fungi? (fun-guy)."
But seriously, on to the wonderful world of Fun-Guys... (Fungi :) ) Fungi live everywhere! In the air, in the water, on land, and in and on plants and animals (including you! Ex: Athlete's Foot). Some are tiny (microscopic) while others are HUGE (over a thousand acres). Fungi are so vital to the environment that the types of fungi in the soil determine the types of plants, which determine the types of animals. There's a fungus among us!
(Again, I just wanted to say that.) Some fungi even help Mario to defeat Bowser! Fungi are heterotrophs, obtaining their nutrients from something else. Unlike plants, they cannot make their own food. Fungi cell walls are made mostly of the carbohydrate chitin, as opposed to plants which are made of cellulose.
Fungi also use the storage carbohydrate glycogen, like animals, as opposed to plants which use starch. Fungi can reproduce sexually or asexually. The sexual lifestyle of fungi is unique in that the zygote is the only diploid cell. When two mating types fuse, the two nuclei do not fuse but coexist until the right conditions are present. When they do fuse, it results in a diploid zygote which immediately undergoes meiosis to return to the haploid state. The coexistence of two different mating types of nuclei is the dikaryotic stage Fungi are probably more related to the Animal Kingdom than the Plant Kingdom.... Which is why they're so good at driving carts! THE END! Saprophytic fungi break down dead and decaying matter for nutrients Parasitic fungi feed off of their living hosts Sporangium: A reproductive structure in which spores are produced. Germinate: To grow sprouts; specifically an embryo inside a plant seed Vegetative: any growth or development that does not involve sexual reproduction.
The mycelium is an example of the non-reproductive part of the mushroom. It is made up of hyphae and is usually just below the surface of the soil. The hypha is a branching filament that makes up the mycelium (plural hyphae). Other than breaking down dead things, why are Fungi important? Yeast is used to make bread, wine and beer Penicillium produces an antibiotic Mushrooms, morels and truffles are delicious. Not the chocolate kind of truffles either, the kind pigs are trained to find. Mycorrhizal fungi have a symbiotic relationshiop with plants. They help the plants absorb nutrients. In return the fungi obtains sugar from the plant. Lichen is also a Fungi. Lichens team up with a photosynthetic partner like green alga or cyanobacterium. The fungi provides essential minerals, carbon dioxide and water, and the algae share the carbohydrates they manufacture. Lichens are an important source of food to caribou. How are fungi harmful to us?
1. Athlete's foot
3. Many mushrooms are poisonous
Amanita is the most harmful, potentiall fatal mushrooms. They can lead to:
- abdominal pain & cramps
- liver damage
Only eat store-bought mushrooms, don't buy them from a dealer either : )