Different colored lichens covering large areas of exposed rock surfaces, or lichens covering or hanging from bark can be a spectacular display when the patches of diverse colors "come to life" or "glow" in brilliant displays following rain. While you may not notice lichens in the world around you, they make up a significant part of the biosphere and are important both in ecology and to humans. A lichen is a symbiotic relationship between a fungus and a photosynthetic partner (algae, cyanobacteria, or both).
lichen, any of about 15,000 species of plantlike organisms that consist of a symbiotic association of algae (usually green) or cyanobacteria and fungi (mostly ascomycetes and basidiomycetes). Lichens are found worldwide and occur in a variety of environmental conditions. Learn what lichens are, how they grow, and why they are important to the environment. Discover lichen types, lifespan, and their role in air quality and ecosystems.
lichens sclerosis, Lichens are a complex life form that is a symbiotic partnership of two separate organisms, a fungus and an alga. The dominant partner is the fungus, which gives the lichen the majority of its characteristics, from its thallus shape to its fruiting bodies. Lichens are group of organisms of composite nature, having two dissimilar organisms (algae and fungus) bounded in a symbiotic relationship. Algae or cyanobacteria and fungus forms beneficial symbiotic relationship to form lichen. Lichens are made up of two or more closely interacting organisms, a fungus, and one or more partners, called photobionts.
lichens sclerosis, The photobiont may be an alga and/or cyanobacteria, both of which can produce simple sugars by photosynthesis. Lichens are fungi that have taken up farming, and they are known as lichenized fungi. Certainly these complex organisms can inhabit many conditions and substrates that would deter other kinds of species — hence they are known as pioneer organisms in ecological succession.
