fungus - hs.bgh2.org
Post on 30-Nov-2021
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Kingdom Fungi- 1.5 million species- 7 Phyla
- Microsporidia- Blastocladiomycota- Neocallimastigomycota- Chytridiomycota- Glomeromycota- Basidiomycota- Ascomycota
Turn to Pg. 615 - Which phyla are most closely related?- Which phylum is not monophyletic?- Which phyla are the youngest?
Fungisome of the oldest and largest organisms on Earth
Largest known living organism: Honey Mushroomcovers 2,200 acres in a forest in Oregon2,400 years old
I. Characteristics● a few are unicellular
○ yeasts● mostly multicellular
○ mushrooms● Eukaryotes● Heterotrophs
II. Fungi Body● Hyphae
○ threadlike filaments ○ basic structural unit of mushroom○ grow rapidly○ can be monokaryotic or dikaryotic
III. Reproduction in FungiMany fungi can reproduce both asexually and sexually3 main types of reproduction occur in fungi● budding● fragmentation● spore production
1. Budding● asexual● occurs in yeast● a new cell develops while attached to parent
cell● splits off when developed
3. Spore production● sexual ● fungi produce spores in a structure known as
a fruiting body○ spores are held within a sac or case called a
sporangium● trillions of spores can be released from a
single fruiting body
Brown Cup Fungus
IV. How Fungi gain EnergyFungi● digest their food before they ingest it● produce enzymes that break down organic
material outside their cells● absorb nutrients into their cells
IV. Ways Fungi gain energy1. Saprophytic Fungi● called saprobes● decompose dead organic material● recycle nutrients back into the food web
2. Parasitic Fungi● absorb nutrients from cells of living
organisms● have modified hyphae call haustoria
○ grow into the host’s tissue
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