Multicellular Organisms Fungi Section 2.4

Fungi Most are decomposers Heterotrophs Break down complex carbon compounds, absorb nutrients and leave simpler compounds behind Heterotrophs Decompose dead organisms Decompose materials left behind (skin, leaves , animal droppings)

Fungi Most are multicellular (yeast is not) Cells have nucleus and thick cell wall Do not have tissues or organs

Fungi are made of Hyphae - a network of threadlike cells Form a mass called mycelium Release enzymes to digest material and then absorb it

Reproduction Reproductive body produces the spores Spores can be produced sexually or asexually Spores are released into the air and can travel great distances Can reproduce asexually Hyphae break off Cell division or budding (yeast)

Forms of Fungi Mushrooms Molds Mostly under ground Part we eat produces spores Some are poisonous Molds Fuzzy growth Not all are bad (penicillin, cheese) Disease (athlete’s foot, Dutch elm)

Forms of Fungus Yeast Lichen Single celled fungi Can cause disease Can be used in food (bread) Lichen Algae and fungus that live together. Each makes food for the other