If you then deal more intensively with the lichens, which are actually not plants but a community of fungi and algae, it gets interesting.

The two organisms form a community, symbiosis, from which both participate: the fungus can absorb water and minerals from the soil and its
environment, but cannot carry out photosynthesis. The production of sugars through photosynthesis is carried out by the alga, which, for lack of
roots, is dependent on the fungus as a supplier for water and minerals. The visible body of the lichen is the fungus, whose color spectrum ranges
from white to yellow, orange, brown, green and grey.

Dear @v-siniarski , The existence of non-vegetative lichens is very mysterious.
I wonder why lichens exist!😄