fungi. why are mushrooms not plants? features of fungi eukaryotic, mostly multicellular;...
TRANSCRIPT
FUNGIFUNGI
why are mushrooms not plants?why are mushrooms not plants?
Features of fungiFeatures of fungi
• eukaryotic,
• mostly multicellular;
• terrestrial;
• have thin filaments called hyphae;
Features of fungiFeatures of fungi
• cell walls made of chitin;
• heterotrophic
• reproduce by spores
• (mushroom caps is the reproductive part of the plant, usually don’t see the rest)
• can reproduce sexually or asexually
How fungi obtain nutrientsHow fungi obtain nutrients
• instead of a stomach, fungi digest food by secreting enzymes outside their bodies, then absorb the digested nutrients;
• decomposers help return nutrients to soil and air;
• hyphae provide a large surface area for absorption
Four divisions of fungiFour divisions of fungi
• classified by reproductive structures
1. zygomycetes1. zygomycetes
• bread mold; form zygospores - thick walled zygote; then stalks with spores
2. ascomycetes2. ascomycetes
• yeasts, mildews, morels, truffles; form sacs of spores which burst open
3. basidiomycetes3. basidiomycetes
• common mushrooms; form club like reproductive structures which release spores
Ecological and economic Ecological and economic importance of fungiimportance of fungi
• mycorrhizae were important in plant evolution
• lichens important in soil formation, indicator of acid rain or air quality
• useful in bread
4. deuteromycetes4. deuteromycetes
• Roquefort cheese, athlete’s foot; reproductive structures are unclear or unknown
Ecological and economic Ecological and economic importance of fungiimportance of fungi
• antibiotics - penicillin
• cyclosporine - immune suppresser useful to transplant patients
• yeast are good genetic engineering subjects