Topic 1 Taxonomy: Fungi

Question 1

• Heterotrophic saprophytes

Answer 1

Fungi

Question 2

• Yeast
• Unicellular
• Reproduce asexually by budding
• Facultative anaerobes

Answer 2

1. Non-filamentous Fungi

Question 3

• Molds
• Multicellular
• Multinucleate (form hyphae)
• Reproduce sexually
• Aerobic

Answer 3

2. Filamentous fungi

Question 4

• Long branching filaments that extend out to form network of fungi (mycelium)

Answer 4

Hyphae

Question 5

• can grow with septate hyphae (have septa diving hyphae into different sections)
• can grow with coenocytic hyphae (one long continuous multinucleated cell; cytokinesis does not occur during cell division)

Answer 5

Mycelium

Question 6

• reproduce asexually by producing conidia: haploid spore-producing structure which produces haploid spores that grow via mitosis; formed at tip or side of conidiophore
• fragmentation: another way for fungi to reproduce

Answer 6

Fungi Reproduction via favorable environments

Question 7

• reproduce sexually producing genetically different offspring with greater chance of survival
• two hyphae fuse their cytoplasm (plasmogamy) to create a single fused cell with 2 haploid pronuclei which fuse (karyogamy) to produce a single diploid cell
• diploid cell produced a spore-producing structure that produces spores via meiosis

Answer 7

Fungi Reproduction via unfavorable environments

Question 8

• symbiotic autotrophs where a fungus is paired with algae or cyanobacteria
• fungus protects the cyanobacteria/algae and provides it with water and nutrients while algae/cyanobacteria photosynthesize to produce food for fungi

Answer 8

Lichens