Question

what is the role of Tulson regarding lichen?​

Answer 1

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Lichens are composed of two different species, but they function as one. They consist of a fungus and algae, living together in a symbiotic relationship where the fungus is the dominant organism. The algae are either green algae or blue-green algae, known as cyanobacteria. The algae produce carbohydrates through photosynthesis which serve as food for the fungus, while the fungus physically protects the algae and provides it with moisture. Lichens can live in a wide range of locations and climates -- from the polar regions to the tropics. They form on undisturbed surfaces such as rocks and tree bark. Lichens come in various forms, but all need clean air and most have beneficial effects on the ecosystem.

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