Lichen

Lichen

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Credit: ALAN SIRULNIKOFF/SCIENCE PHOTO LIBRARY

Caption: Lichen. Unidentified lichen (orange) on a rock. A lichen is a mutualistic organism consisting of an alga that lives within a fungus. Their symbiotic relationship is mutually beneficial. The alga produces food for the fungus by photosynthesis, while the fungus protects the alga from extreme weather conditions. Photographed in Grasslands National Park, Saskatchewan, Canada.

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Keywords: alga, algal, botany, canada, canadian, fungal, fungus, grasslands national park, lichen, lichens, mutualism, mutualist, mutualistic, nature, plant, rock, saskatchewan, symbiont, symbiosis, symbiotic organism

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