Kingdom Fungi. General Characteristics. Fungi are heterotrophs obtaining nutrients by absorption. (They CANNOT make their own food like plants can with photosynthesis.) a. Fungi are either: Parasites —obtain nutrients from living organisms
Fungi are heterotrophs obtaining nutrients by absorption. (They CANNOT make their own food like plants can with photosynthesis.)
a.Fungi are either:
Parasites—obtain nutrients from living organisms
Decomposers—(or saprophytes) obtain nutrients from dead organisms
b. Obtain nutrition by releasing digestive enzymes on organic matter to break it down, then the fungi absorbs the nutrients.
Few fungi are unicellular but MOST are multicellular (many celled organisms).
All fungi are eukaryotic (Eu = True) having a distinct nucleus.
All have cell walls made mostly of the carbohydrate chitin, unlike cell walls of plants which are made mostly of (cellulose). Chitin is found in the exoskeleton of insects.
Ringworm and Athletes Foot: Parasites
5. Lichens: composed of fungi and algae
Example of symbiotic relationship—both benefit. Fungus provides moisture and algae provides food through photosynthesis.
b. Yeast—Baking and brewing
c. Cheeses—Bleu Cheese
e. Cyclosporine—Drug used to prevent organ transplant rejection
f. Decomposers—Recycle nutrients by breaking down bodies and waste of other organisms
b. Human diseases—Ringworm and Athletes Foot
c. Plant diseases—Mold, Powdery Mildew, Rusts