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They play an important role in plant succession on bare rocks/soil.

Question

They play an important role in plant succession on bare rocks/soil.

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Solution

Lichens play a crucial role in plant succession on bare rocks/soil. Here's how:

  1. Colonization: Lichens are among the first organisms to colonize bare rocks or soil. They are hardy organisms that can withstand harsh conditions, including extreme temperatures and low nutrient availability.

  2. Weathering: Lichens secrete acids that break down the rock into smaller particles. This process is known as weathering.

  3. Soil Formation: The weathering process contributes to soil formation. The broken down rock particles mix with dead lichen material to form a thin layer of soil.

  4. Nutrient Cycling: Lichens also play a role in nutrient cycling. They absorb nutrients from the rain and air, which are then added to the soil when the lichen dies and decomposes.

  5. Preparation for Higher Plants: The soil created by lichens provides a suitable environment for the growth of mosses and other plants. These plants further contribute to soil development by adding organic matter when they die

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