what is special about lichens
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Answers
A lichen is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship. The combined lichen has properties different from those of its component organisms. Lichens come in many colors, sizes, and forms.
In jelly lichens the fungal hyphae and algal cells are mixed uniformly. The algal cells make food for both themselves and the fungus. They contain chlorophyll, which absorbs sunlight. The alga uses the light energy to make carbohydrate from carbon dioxide and water. Lichens are important because, lichens enable algae to live all over the world in many different climates, they also provide a means to convert carbon dioxide in the atmosphere through photosynthesis into oxygen, which we all need to survive. ... Lichens can provide us with valuable information about the environment around us.