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Rock lichen

Image Number: 20397B

Caption:

Thallus of a rock lichen. Small growth extensions are protruding from the main thallus surface. Lichens are associations of fungi and algae. The fungi and algae grow with their tissues intimately entwined. The fungi receive sugars and other carbon compounds from the algae. The fungi produce lichen acids which are a mixture of special chemicals that are thought to protect both fungi and algae from being eaten by predators. Mutualisitc or symbiotic relationship.

Keywords:

| 20397B lichen rock lichen algae fungi fungus alga thallus mutualistic symbiotic crustose lichen foliose lichen SEM |

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