ZoologyWhich is the correct order of succession levels in xerarch?

Which is the correct order of succession levels in xerarch?

  1. A

    lichen, moss stage, annual herb stage, perennial herb stage, shrub stage, forest

  2. B

    annual herb stage, perennial herb stage, lichen, moss stage, shrub stage, forest

  3. C

    perennial herb stage, annual herb stage, lichen, moss stage, shrub stage, forest

  4. D

    shrub stage, forest, annual herb stage, perennial herb stage, lichen, moss stage

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    Solution:

    Xerarch succession (Xerosere) occurs in xeric conditions (extremely dry environments). In this succession, the growth of species at different stages is restricted by the availability of water. 

    • It begins when the bare rocks are formed and colonized by lichens and mosses.
    • These are followed by herbs and shrubs.
    • Finally, trees develop and form forests as the climax community.
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