How do you change your computer screen from landscape to portrait setting? My son was playing with the computer and when I looked at the screen he somehow changed it to a landscape appearance rather than standard portrait.
Lichens have been described as dual organisms because they are symbiotic associations between two (or sometimes more) entirely different types of microorganism 1  -. a fungus (termed the mycobiont). 2  a green alga or a cyanobacterium (termed the photobiont).
A lichen is made up of fungus cells for support and algae cells which fix carbon via photosynth â¦ esis. The algae and fungi species that make up a give lichen species are only found as lichen, they don't live on their own. This is a very tight symbiosis. An even tighter one can be seen in every eukaryotic cell.