The earliest settlers on barren lands generally are:
Correct answer: B. Lichens
- A. Diatoms
- B. Lichens
- C. Mosses
- D. Ferns
Explanation
Lichens are pioneer organisms that can colonize barren surfaces and help initiate soil formation by weathering the substrate and adding organic matter. Mosses and ferns generally establish after this early stage has improved the site.
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