Chapter 31-Fungi Flashcards
1
Q
coenocytic
A
- fungi lacking septa and consisting of a continuous cytoplasmic mass having 100s or 1000s of nuclei
- results from repeated division of nuclei w/o cytokinesis
2
Q
heterokaryon
A
mycelium containing many coexisting, genetically different nuclei
3
Q
dikaryon
A
2 distinct nuclei in same cell
4
Q
molds
A
fungi that reproduce asexually by growing filaments that produce (haploid) spores by mitosis and that form visible mycelia
5
Q
haustoria
A
specialized hyphae that some fungi use to extract nutrients from, or exchange nutrients with, their plant hosts
6
Q
karyogamy
A
- stage in sexual cycle during which the 2 haploid nuclei contributed by the 2 parents fuse, producing diploid cells
- forms zygotes and other transient structures
- only diploid stage in most fungi
7
Q
chytrids
A
- phylum Chytridiomycota
- have chitin
- mostly aquatic
- absorptive nutrition
- flagellated zoospores (unique in this)
- coenocytic hyphae
- enzymes and metabolic pathways same as other fungi
8
Q
zygomycota
A
- black bread mold
- some grow in cow patties
- some can project spores
9
Q
glomeromycota
A
mycorrhizae relationships
10
Q
ascomycota
A
- sac fungi
- largest and most diverse phyla
- lichen fungi
- conidia: haploid spores
- responsible for lots of plant disease
- yeasts
11
Q
soredia
A
reproductive structure of lichen
