GREEN is the colour between blue and yellow in the spectrum; coloured like grass or emeralds.
A lichen is a composite organism that arises from algae or cyanobacteria (or both) living among filaments of a fungus in a symbiotic relationship. The combined life form has properties that are very different from the properties of its component organisms. Lichens come in many colours, sizes, and forms. The properties are sometimes plant-like, but lichens are not plants. Lichens may have tiny, leafless branches (fruticose), flat leaf-like structures (foliose), flakes that lie on the surface like peeling paint (crustose), or other growth forms. Lichens do not have roots that absorb water and nutrients as plants do, but like plants they produce their own food by photosynthesis using sunlight energy, from carbon dioxide, water and minerals in their environment. When they grow on plants, they do not live as parasites and only use the plants as a substrate.
If you take part in this meme:
- Please link back to this page from your blog, with the Friday Greens logo or link text;
- In the spirit of community, please visit other participants to see their photos and leave a comment;
- Say hello here in the comments box, which is always appreciated!