Asked in ETEA MDCAT 2018 2018

The first stage in development of Xerosere is appearance of:

Correct answer: B. Crustose lichens

  • A. Foliose lichens
  • B. Crustose lichens
  • C. Fruticose lichens
  • D. Climax stage

Explanation

Due to great exposure to the sun and extreme deficiency of water, the first pioneers in the bare rock area are a few simple organisms. The most successful of such organisms is crustose lichens.

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