21st November 2019

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How do lichens benefit the environment?

Lichens are important for several reasons. 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.

Beside this, what causes lichen to grow?

Lichens on trees are a unique organism because they are actually a symbiotic relationship between two organisms — fungus and algae. The fungus grows on the tree and can collect moisture, which the algae needs. The algae, in return, can create food from the energy of the sun, which feeds the fungus.

How do Lichens grow and develop?

Growth and Development in Lichens. Like all living things lichens need nutrients and energy to grow. Nutrients they obtain from the air (including dust), water and some from the substrate they are growing on. Energy they obtain through photosynthesis, which is the role of the algal partner.

How long does it take for lichens to grow?

Possibly the Earth's oldest organisms, crustose yellow-green map lichens (Rhizocarpon geographicum) growing in the Arctic are 8,600 years old. Foliose lichens have leafy lobes that usually grow parallel to the growth surface.
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