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Fungus. Chapter 19. Characteristics. Fungi are eukaryotic heterotrophs Along with bacteria they are major decomposers Many are saprophytes which means they live off dead material. Most reproduce both sexually and asexually . Fungi are found almost everywhere on earth.

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fungus

Fungus

Chapter 19

characteristics
Characteristics
  • Fungi are eukaryotic heterotrophs
  • Along with bacteria they are major decomposers
  • Many are saprophytes which means they live off dead material.
  • Most reproduce both sexually and asexually.
  • Fungi are found almost everywhere on earth.
  • Their cells have cell wallsmade of chitin.
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Morels

  • Gourmet food
  • Found in woodlands
  • $20 per pound
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3. Basidiomycota (club fungi) mushroom, shelf fungi, and puffballs.

Club fungus

mushrooms shelf fungus puffballs

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The mushroom is called the fruiting body of the fungus because its purpose is to produce reproductive spores.
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Athletes foot

Imperfect fungus

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Toenail fungus

  • 35 million infected in US
  • Can spread from person to person
  • Also called “onychomycosis”
lichen
Lichen
  • Lichen: A partnership between a fungus and an algae.
  • The algae provides food for the fungus.
  • The fungus provides a place for the algae to live.
lichen1
Lichen

There are three forms of lichens:

  • Crustose:paint-like crusts that are tightly attached to trees and rocks
parts of a mushroom
Parts of a Mushroom
  • Fruiting body:grows above ground
    • Stalk(Stipe):main support of mushroom
    • Ring (annulus):skirt of tissue circling stalk
    • Cap: top of mushroom
    • Scales:flakey surface of the cap
    • Gills:underside of cap (produce spores)
    • Spores:reproductive structures
  • Mycelial threads:Underground network of hyphae.
    • Hyphae: long strands of cells; make up the body of the fungi.
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Scale

Cap

Gills

Fruiting body

Ring

Spores

Stalk

Mycelial Threads

Hyphae

interesting fungi
Interesting Fungi
  • Cyclosporine: An organ transplant drug that is used to prevent rejection of the transplanted organ.
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Truffles: Very expensive fungus that is used to flavor foods. Pigs and dogs are used to hunt this fungus that is buried underground.

White Truffles

$800-$1,500

Per pound

Black Truffles – 3 oz $180

aspergillus niger
Aspergillus niger
  • Used to create citric acid, an additive to many foods.
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