Fungi Flashcards
1
Q
Characteristics
A
- eukaryotic
- spore forming
- ingest through absorption
- no chlorophyll
- sexual and asexual reproduction
- woody debris of dead trees
2
Q
Unicellular fungi
A
- yeast
- budding (hyphal phase)
- cellular fission
3
Q
Fungi life-cycle
A
Haploid (N) - two nuclei, cytoplasmic fused
Dikaryotic (N+N) - diploid zygote, multiply through mitosis
Diploid (2N) - meiosis, mitosis for haploid
4
Q
Ascomycota
A
- sexual: endogenic asci
- asexual: exogenic conidia
- includes yeasts
5
Q
Basidiomycota
A
- sexual: exogenic basidiospores on club-shaped basidia
- asexual: exogenic conidia
- also yeasts
6
Q
Deuteromycetes
A
- no sexual production
- some Ascomycota and Basidiomycota
7
Q
Zygomycota
A
- lower fungi
- sexual: thick-walled endogenic zygospores
- asexual: endogenic spores in sac-like sporangia
8
Q
Phylum Zygomycota
A
- mycelium
- coenocytic hyphae
- sporangia
- rarely zygospores
- some show yeast-like growth
9
Q
Genus Rhizopus
A
- distinguished from mucor
- formation of stolons (grow rapidly)
10
Q
Rhizopus charateristics
A
- pigmented, unbranched sporganiophore
- rhizoid at opposite end as sporangium
- sexual reproduction via zygospore
11
Q
Mucor fungi Sexual stage
A
- unfavourable conditions
- zygospore formation
- lie dormant in adverse conditions
- meiosis forms sporganium
- sporangiospores formed
12
Q
Mucor fungi Vegetative stage
A
- sporangiospores lead to spore germination
- mycelium forms
- can either form zygospores or sporangium that lead to sporangiospores
13
Q
Uses of Zygomycetes
A
- infect immunocompromised people
- normally harmless, useful saprophytes
14
Q
Rhizopus uses
A
- produce fermented food
- steroid synthesis
15
Q
Mucor uses
A
- produce sufu
- produce omega-6 fatty acid rich oils
