Question

Lichens are organisms that result from a mutualism between ____ and ____.

1) Chytridomycetes : algae
2) Glomeromycetes : plants
3) Ascomycetes : algae
4) Basidiomycetes : bacteria
5) Zygomycetes : plants
6) Basidiomycetes : Ascomycetes

Answer 1

The correct option is 3. Lichens are the result of a mutualistic relationship between a fungus, typically an Ascomycete or Basidiomycete, and a photosynthetic alga or cyanobacterium, with the correct answer being Ascomycetes and algae.

Step-by-step explanation:

Lichens are fascinating organisms that exemplify a mutualistic relationship between two different life forms. Specifically, a lichen is formed by the union of a fungus, mostly from the Ascomycota or Basidiomycota group, and a photosynthetic partner, which is usually a green alga or a cyanobacterium.

This symbiotic relationship is essential as both organisms contribute to each other's survival; the alga or cyanobacterium provides carbohydrates through photosynthesis, while the fungus offers protection and nutrients. The correct answer to the question, "Lichens are organisms that result from a mutualism between ____ and ____," is option 3) Ascomycetes : algae.