UCO Microbiology & Mycology Exam: Lichen Growth Forms (Crustose, Foliose,
Fruticose), Symbiotic Algae-Fungus Relationships, Mold Staining (Lactophenol
Cotton Blue), Bacteriophage Plaques & PFU Calculations, Aerobes, Anaerobes,
Facultative Organisms, GasPak Oxygen Removal & Palladium Catalyst,
Thioglycollate Enrichment, Heat Shock Spore Selection, Algal Phyla
(Chlorophyta: Volvox, Spirogyra, Desmids), Fungal Phyla (Zygomycota: Rhizopus,
Ascomycota: Morchella, Penicillium, Saccharomyces, Sordaria, Basidiomycota:
Mushrooms), Protozoa (Amoebozoa, Euglenozoa: Trypanosoma, Euglena,
Ciliophora: Paramecium), Sexual (Zygospores, Ascospores) & Asexual
Reproduction (Fragmentation, Budding, Conidiospores, Sporangiospores),
Conjugation Genus, Selective Media, Enrichment Steps, and Practical Lab
Calculations Exam Questions Verified and Provided with Complete A+ Graded
Rationales Latest Updated 2026
Name the three types of lichen growth forms.
Crustose, Foliose, & Fructicose
Crustose characteristics
- crusty
- edges flat, unlobed and closely attached to substrate
- hard to remove without damaging substrate or lichen
, -algae usually dispersed
Foliose characteristics
- leafy
- a sandwich of fungal layer with algal mat in middle
- circular growth. lobes
- top and bottom layers different
Fructicose characteristics
- shrubby
- round branches with its fungal layer outside, its algal layer within
- no rhizines
- vertical growth pattern
- odd shaped structures such as goblets; threads
What two organisms form a lichen?
an algae and a fungus
Fruticose), Symbiotic Algae-Fungus Relationships, Mold Staining (Lactophenol
Cotton Blue), Bacteriophage Plaques & PFU Calculations, Aerobes, Anaerobes,
Facultative Organisms, GasPak Oxygen Removal & Palladium Catalyst,
Thioglycollate Enrichment, Heat Shock Spore Selection, Algal Phyla
(Chlorophyta: Volvox, Spirogyra, Desmids), Fungal Phyla (Zygomycota: Rhizopus,
Ascomycota: Morchella, Penicillium, Saccharomyces, Sordaria, Basidiomycota:
Mushrooms), Protozoa (Amoebozoa, Euglenozoa: Trypanosoma, Euglena,
Ciliophora: Paramecium), Sexual (Zygospores, Ascospores) & Asexual
Reproduction (Fragmentation, Budding, Conidiospores, Sporangiospores),
Conjugation Genus, Selective Media, Enrichment Steps, and Practical Lab
Calculations Exam Questions Verified and Provided with Complete A+ Graded
Rationales Latest Updated 2026
Name the three types of lichen growth forms.
Crustose, Foliose, & Fructicose
Crustose characteristics
- crusty
- edges flat, unlobed and closely attached to substrate
- hard to remove without damaging substrate or lichen
, -algae usually dispersed
Foliose characteristics
- leafy
- a sandwich of fungal layer with algal mat in middle
- circular growth. lobes
- top and bottom layers different
Fructicose characteristics
- shrubby
- round branches with its fungal layer outside, its algal layer within
- no rhizines
- vertical growth pattern
- odd shaped structures such as goblets; threads
What two organisms form a lichen?
an algae and a fungus
