Ch' 18

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Ch. 18

• Kingdom Fungi
• Part 1

Fungi Intro Clip (200)
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What are Fungi?

• Eukaryotic
• Cells with nuclei.
• All are Heterotrophs
• Digest food outside of their bodies and absorb
  it.
• Cell Walls with chitin
• Chitin- a complex carb that is also found in the
  exoskeletons of insects.

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Structure and Function

• All multicellular (except yeast)
• Made of hyphae
• Tiny filaments one cell thick.
• Hyphae grow in a thick, tangled mass called
  mycelium.
• The reproductive structure you see above ground
  is called a fruiting body.

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How Fungi Spread

• Most fungi reproduce both asexually and sexually.
• Hyphae break off and grow on their own.
• Sometimes spores are produced.
• Spores are produced in sporangia.

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Sporangia contain spores that are spread by air
or animals.
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Classification of Fungi

• Molds
• Sac Fungi
• Club Fungi
• Imperfect Fungi

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Molds- Zygomycota

• Fungi that grow on foods.
• Contain root-like hyphae called rhizoids.
• Anchor fungi to food and release enzymes.
• They are decomposing food.
• Contain zygospores
• Spore that contains zygotes to make more mold.

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Ex Rhizopus stolonifer (black bread mold)
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Sac Fungi- Ascomycetes

• Contain an ascus.
• Reproductive structure that contains spores.
• Meiosis followed by mitosis so that 8 cells
  called ascopores are produced.
• Largest phylum
• Ex Yeast, pink coating on shower curtains,

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Yeast- The only unicellular fungi reproduce by
budding.
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Ascomycetes