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Assertion Lichens and mosses are said to form the pioneer community in xerarch succession Reason It is because these species get established later, during the course of succession.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Correct answer: Assertion is correct but Reason is incorrect

Solution

Lichens and mosses are pioneer species because they are the first to establish on bare, dry habitats in xerarch succession. The reason is wrong because these species do not get established later; they appear early and help create conditions for subsequent communities.

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