Which of the following would appear as pioneer organisms on bare rocks?

Lichen

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Liverworts

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Mosses

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Green algae

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Solution

The correct option is A Lichen
Pioneer species are the first species to enter an area after a disturbance. They are the colonizers. The pioneer species are the first stages of ecological succession, which is a series of changes over time in the types of organisms in an ecosystem. Common pioneer species include bacteria, fungi and lichens.

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