Chapter 25 Flashcards
3 lifestyles of Fungus
- Decomposers
- Mutualists
- Parasites
What is mycelia?
- the vegetative part of a fungus, consisting of a network of fine white filaments (hyphae)
What is hyphae?
- each of the branching filaments that make up the mycelium of a fungus.
What is the point of septa in fungi?
-The pores allow cell to cell movement
What kind of fungi lack septa?
Coenocytic fungi
What are most fungi cell walls made up of?
- Chitin, Mannose, glucan
What is haustoria? (parasitic)
Specialized hyphae that allow the fungi to penetrate the tissues of its host
What are Arbuscular mycorrhizal fungi?
They can extend hyphae through the cell walls of root cells and invaginate the root cell membrane
Ectomycorrhizal fungi?
- Form sheaths of hyphae over a root and also grow into extracellular spaces of the root cortex
Plasmogamy?
The union or fusing of two parent mycelia
Karogamy?
the final step in the process of fusing together two haploid eukaryotic cells, and refers specifically to the fusion of the two nuclei.
What do you call molds and yeasts that have no sexual stage?
Deuteromycetes
What are fungi most closely related to?
Nucleariids
What are Chytrids?
-They are decomposers, parasites, and mutualists
-Live in fresh water and terrestrial environments
- Have flagellated spores called zoo spores
and can kill frogs
What are zygomycetes?
They are resistant to harsh conditions -Zygosporangia - Fast growing bread molds
