Lecture 20 Flashcards
Are fungi multi or unicellular
Unicellular
What are the Filamentous tube-like strands called
hypha
What is Sclerotium
hardened mass of mycelium that generally serves as an overwintering stage
What do Saprophytes or Saprobes feed on
dead tissues or organic waste (decomposers)
Parasites feed on what
feeding on living tissue of a host
What is fungal cell wall and insect exoskeleton made of
Chitin
Absorptive heterotrophs
•Digest and absorb food
•Release digestive enzymes to breakdown organic material or their food/host
Where do fungi get carbon from
Organic sources
What does the tips of Hypha release
Enzymes
Products of enzymatic breakdown diffuse to where
Back into Hypha
Are fungi more closely related to plants or animals
Animals
What do Most phytopathogenic fungi belong to
Basidiomycota and Ascomycota
Are sexual spores meiotic or mitotic
Meiotic
Are asexual spores meiotic or mitotic
Mitotic
Function of spores
Ensure that species will disperse to new location
Are spores motile or non-motile
Non motile
How are spores dispersed
•wind
•rain
What are fruiting bodies
Modified hyphae that make
Asexual spores
Name the types of fruiting bodies
•Basidia
•Sporangia
•Ascus
A hypha with 2 nuclei is called what
A zygote
A zygote divides to make what
A spore
What type of conditions is a spore used for
For survival
In poor environmental conditions eg lack of nutrients,space and moisture
Example of club fungi
Basidiomycota
Describe Basidiomycota
• Club fungi have fruiting bodies which are club-shaped.
• Sexual reproductive structures called basidia
• Include mushrooms, puffballs, and shelf fungi
Example of Sac fungi
Ascomycota
Describe Ascomycota
• Most are multicellular (except for yeast)
• Common asexual reproduction
• Sexual Reproduction-asci, ascospores
• Largest phylum of Fungi
• Important plant pathogens
and saprobes
Largest phylum of fungi
Ascomycota
What are oomycetes closely related to
algae and to green plants
What is oomycetes cell wall made of
β-glucans
Example of asexual oomycetes
Zoospores
Example of sexual oomycetes
Oospores