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Ecosystem
Ecological succession - pioneer species
2 questions from 2 papers, each with its answer.
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- Ecological succession - pioneer species
- lichens-pioneer
All Questions
2022 Phase 2 1 question
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The species that come to appear in bare area are calledThe first biotic species that invade a bare area are called pioneer species, e.g. lichens on rocks, phytoplankton in ponds.
2016 1 question
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Which of the following would appear as the pioneer organisms on bare rocks?
Lichens colonise bare rock first in xerarch succession.
Lichens are symbiotic associations of algae (phycobiont) and fungi (mycobiont). They release acids that dissolve rock particles, causing weathering and soil formation, so lichens are pioneers on bare rock.