Body is made of HYPHAE - thread like, many-celled tubes that produce enzymes to help break down food outside the fungus
SAPROPHYTES - organism that obtains foo by absorbing dead or decaying tissues of other organisms
Some are PARASITES: obtain their food directly from living things.
They DO NOT have roots, leaves or chlorophyll
SPORES: waterproof reproductive cell that can grow into a new organism.
Asexual reproduction via mitosis: offspring is genetically identical to parent
Sexual reproduction via hyphae joining
Neither male or female, + or -
Classes of Fungi
- Based on what type of structure is produced when hyphae join in sexual reproduction.
Mushroom = the reproductive struture of the fungus
Hyphae gow in soil or on surface of its food source
Spores are produced in club-shaped structures called BASIDIUM
Yeast, molds, morels, truffles: 30,000 species
Spores are in a saclike structure called an ASCUS
Yeasts are single-celled. Reproduce sexually by forming spores an asexually by budding.
BUDDING - form of asexual reproduction in which a new organism forms on the side of a parent organism. Genetically identical.
Fuzzy black mold on bread
SPORAGNIUM - round spore case produced on the tips of upright hyphae
IMPERFECT FUNGI - no observed sexual reproduction
USES OF FUNGI
LICHENS: organism that is made of a fungus and a green alga or a cyanobacterium. Mutually beneficial relationship. Fungus gets food made by the algae or cyanobacterium. Algae gets a moist, protected place to live.
Important food source for caribou, musk ox & others
Part of the weathering and succession process.
Part of soil formation.
Sued as an indicator organism to monitor pollution.
MYCORRHIZAE - fungal interaction with plant roots that help the plant absorb more nutrients from the soil. Some plants can't grow with out mycorrhizae.
Yeast -> Bread
Disease: Dutch elm disease, apple scab, smuts & rust
HEALTH & MEDICINE
Ringworm & Athlete's foot
Penicillin is grown by an imperfect fungi
Cyclosporine - rug used to help fight a body's rejection of transplanted organs