FUNGUS LAB REVIEW
Zygote Fungi
1.
Describe the hyphae, role, activities…etc.
Vegetative; growth and nutrition
2.
What is the function of sporangia?
Produce spores; sexual & asexual reproduction
3.
What is the function of spores?
Produce haploid hyphae
Zygote Fungi
1.
Describe the shape of the hyphal filament?
Long and narrow
2.
How does this allow for maximum nutrient
acquisition?
High surface area to volume ratio
3.
Hyphae elongate from the tip. How does this help
them obtain nutrients?
Maintain high surface area
Humidity and Growth
1.
2.
3.
What are the requirements for fungal growth?
Moisture and darkness
What rooms of your home are most likely to promote fungal
growth?
Bathroom, kitchen
There are fungi that infect human skin. What parts of the
body are most likely to promote fungal growth?
Feet, toe nails, baby’s butt (diaper rash)
Club fungi
• On which part of the mushroom Coprinus are the
spores formed
• Basidia on gills of fruiting body
• Which part of the fungus obtains nutrients?
• Mycelium, hyphae
Fungal diversity
• What are the unique/distinctive characteristics of
fungi?
•
•
•
•
Absorptive heterotrophs
Cell walls made of chitin
Hyphae-digest material and absorb nutrients
Mycelium (mass of fungal hyphae)
• How are the other fungi on display similar to Rizopus?
How are they different?
• Mycelium, hyphae, absorptive,
• No sporangia, cells separated by membrane, sexual reproduction
Fungal diversity
• Which is the dominant or more common structure in a fungal life
cycle? What is the function of each?
• Mycelium is dominant
• Mycelium is vegetative
• Hyphae-digest material and absorb nutrients
• Fruiting body is reproductive
• Imagine a ecosystem without fungi. How would it be different?
• Less materials recycling, less population control
• What do you think the advantages and disadvantages of for
asexual reproduction? Sexual reproduction?
• Asexual• Advantage-Don’t need a partner
• Disadvantage- No genetic diversity
• Sexual
• Advantage- genetic diversity achieved
• Disadvantage- Need a partner
Fungal diversity
List four economically important Fungi and their uses
1.
Mushrooms- food
2.
Yeasts- bread, beer, wine
3.
Peniciliumantibiotic (medicine)
4.
Lichensdyes
Fungal diversity
List three ecologically important roles of fungi
1.
Decomposers
2.
Population control (predators)
3.
Mycorrhyzae (symbionts)
4.
Lichens- foundation species, N-fixers
lichens
•
What two organisms make up a lichen? What are their modes of
nutrition?
1. Fungus- heterotrophic
2. Algaautotrophic
•
Which organism in a lichen produces a source of energy richnutrients that feeds the other?
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When two organisms live in close association, what term is
applied to the relationship?
•
•
symbiosis
What term applies when both benefit?
•
•
alga
mutualism
Name at least one ecological role of lichen in the environment
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Foundation species
decomposers
There are three main forms of lichens
• Fruticose - miniature
shrubs, or hanging,
branching, attached
at one end
• Crustose - “crust-like”
attached to substrate
along lower surface
• Foliose - “leaf-like”
weakly attached to
substrate