1 / 19

Party Guys are Fun- Gis !!!

Party Guys are Fun- Gis !!!. My Favorite Food: Mushrooms. What Are Fungi?. Fungi: Are eukaryote s (have an organized nucleus) Have cell walls Are heterotrophs Use spores to reproduce They also: Need moist warm places to grow DO NOT MOVE. What Are Fungi? Cell Structure.

nanaj
Télécharger la présentation

Party Guys are Fun- Gis !!!

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Party Guys are Fun-Gis!!! My Favorite Food: Mushrooms

  2. What Are Fungi? • Fungi: • Are eukaryotes (have an organized nucleus) • Have cell walls • Are heterotrophs • Use spores to reproduce • They also: • Need moist warm places to grow • DO NOT MOVE

  3. What Are Fungi?Cell Structure • Can be unicellularor multicellular • Most cells of fungi (except for yeast) are arranged in structures called hyphae. • Hyphae- the branching, threadlike tubes that make up the bodies of multicellular fungi • Fungi appearance depends on how hyphae are arranged • Fuzzy-looking molds: loose hyphae • Mushroom caps: tight hyphae

  4. Cap Gills Stalk Hyphae Underground hyphae

  5. What Are Fungi?Obtaining Food • Absorb food through hyphae that grow into a food source 1. Fungus grows into the food source 2. Digestive chemicals ooze from hyphae into food 3. Chemicals break down the food into small substances to be absorbed by hyphae

  6. Reproduction in Fungi • Most reproduce by making spores • Lightweight spores are surrounded by a protective covering and can be carried easily though air or water to new sites • Fruiting Bodies: reproductive structure where spores are produced • Vary in appearance in all fungi

  7. ReproductionAsexual • Most fungi reproduce sexually and asexually. • Asexual- if there is adequate moisture • Cells at the tips of hyphae divide to form spores • Spores grow into fungi genetically identical to parent

  8. Asexual Reproduction cont’d(Budding) • Asexual reproduction in yeast cells is called budding. • During this process, NO spores are produced. • Small yeast cell grows from body of large, well-fed parent cell in a way similar to the bud forming on the branch of a tree. • New cell breaks away and lives on its own.

  9. Sexual Reproduction • Most fungi can also reproduce sexually • Done when growing conditions become unfavorable • Hyphae of 2 fungi grow together • Genetic material is exchanged • New reproductive structure grows from the joined hyphae and produces spores • Spores develop into fungi that differ genetically from parents

  10. Classification of Fungi • 3 major groups: • Sac fungi- produce spores in sac-like structures. • Include yeast, morels, and truffels • Club fungi- produce spores in clublike structures. • Include mushrooms, rusts, puffballs • Zygote Fungi- produce very resistant spores • Includes fruit and bread molds

  11. The Role of Fungi in Nature • Fungi can be: • Food for many people • Decomposers and recyclers on Earth • Disease causing • Used to fight diseases • Found living in symbiosis with other organisms

  12. Food and Fungi • Yeasts- used in bread making and baking • Molds- used to make cheeses • Mushrooms- my favorite!!! • Morel, button, portabella, • Never pick and eat wild mushrooms, they may be poisonous

  13. Environmental Recycling • Fungi are decomposers • Live in soil and break down chemicals in dead plant matter • Returns nutrients to soil • Imagine a world without decomposers……..YUCK!!!!!

  14. Disease-fighting Fungi • Alexander Fleming- discovered Penicillium mold in 1928 • Produced first antibiotic of penicillin • Since then, many antibiotics have been formed by molds and fungi • Thank you Mr. Fleming!! • Here is a website to visit for further info on Fleming and penicillin http://herbarium.usu.edu/fungi/FunFacts/penicillin.htm

  15. Disease-causing Fungi • Parasites that cause serious disease in plants • Sac fungus causes Dutch elm disease • Club fungus cause corn smut and wheat rust • Some cause disease in humans • Athlete’s foot fungus- irritation between toes • Ringworm- itchy circular rash on skin • Can easily spread from person to person • Treated with antifungal medicines • Here is a website that tells more about disease causing fungi if you are interested • http://herbarium.usu.edu/fungi/FunFacts/endocarditis.htm

  16. Fungus-Plant Root Associations • Some fungi’s hyphae helps plants grow larger and healthier • Hyphae spread out underground and absorb water/nutrients for plant • Known as a mutualistic relationship

  17. Lichens • Lichen: consists of fungus and either algae or autotrophic bacteria that live together in a mutualistic relationship • Fungi get: • food • Algae/bacteria get: • Shelter, water, and minerals. • Some plants cannot live without their fungal partner!! Anyone heard of independence?!

  18. Lichens cont’d • Called “pioneer” organisms • first appear on the bare rocks after a volcanic eruption, fire, or rock slide • Lichens break down the rock into soil so other organisms can grow • Very sensitive to pollutants • Die when pollution levels rise • Used to assess air quality in an area • http://herbarium.usu.edu/fungi/FunFacts/UrbanTreasure.htm • http://herbarium.usu.edu/fungi/FunFacts/DesertTreasure.htm

More Related