Difference between revisions of "Lichen"
(New page: thumb|right|px|Lichen'''Lichen''' are symbiotic organisms containing both algae and fungi. The fungal cells provide structure and shelter for the...)
Revision as of 16:52, 25 January 2009
Lichens can survive in some of the most barren and severe regions of the world. They tolerate extreme cold and dry conditions through dormancy and the ability to recover quickly when conditions are favorable. Although lichens can grow in regions with more rainfall, they actually require little rainfall to survive.
The ESA launched lichen samples into Earth orbit, where they were exposed to the full vacuum of space for 14.6 days. Despite the intense radiation and vacuum, the samples returned alive and unharmed.
Lichen is an important food source for reindeer and some species of moth. Rock tripe is a species of that is eaten by humans, and is used in the cuisine of Korea. Chemicals produced by certain species are useful in medicine and industry.