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23.1 Characteristics of Fungi
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- Fungi are saprotrophic detritivores that aid the cycling of inorganic nutrients in ecosystems.
- The body of a fungus is multicellular; it is composed of thin filaments called hyphae.
- As an adaptation to life on land, fungi produce nonmotile and often windblown spores during asexual and sexual reproduction.
| - How do fungi obtain nutrition?
Answer - A mycelium is a network of filaments called ____________ which function to increase the _____________ to volume of the organism allowing for greater _____________ of nutrients.
Answer - How are fungi like insects?
Answer - In what form do fungi store food and is this more like plants or animals?
Answer - What is a spore?
Answer
| Essential Study Partner
Summaries of major points:- Fungi are multicellular eukaryotes
- Structure of fungi
- Reproduction of fungi
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23.2 Evolution of Fungi
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- Fungi are classified according to aspects of their sexual life cycle. Zygospore fungi have a dormant stage consisting of a thick-walled zygospore.
- During sexual reproduction of sac fungi, saclike cells (asci) produce spores. Usually, asci are located in fruiting bodies.
- During sexual reproduction of club fungi, club-shaped structures (basidia) produce spores. Basidia are located in fruiting bodies.
- The imperfect fungi always reproduce asexually by conidiospores; sexual reproduction has not yet been observed in these organisms.
| - How are fungal groups classified?
Answer - True or False: Fungi are only able to reproduce asexually.
Answer
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Essential Study Partner
Summaries of major points:- Evolution of fungi
- Zygospore fungi
- Sac fungi
- Yeasts
- Club fungi
- Imperfect fungi
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23.3 Symbiotic Relationships of Fungi
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- Lichens, which may live in stressful environments, are an association between a fungus and a cyanobacterium or a green alga. The fungus may be somewhat parasitic on the alga.
- Mycorrhizae is an association between a fungus and the roots of a plant, such that the fungus helps the plant absorb minerals, and the plant supplies the fungus with carbohydrates.
| - What experimental evidence suggests that the fungal/algal interaction found in lichens is not mutualistic (in which both benefit)?
Answer - What benefit do plants receive from mycorrhizae and what benefit do mycorrhizae receive from plants?
Answer
| Summaries of major points:- Lichens
- Mycorrhizae
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