Choose the INCORRECT statement about lichens.
Fungi and cyanobacteria both lives in lichens independently.
The incorrect statement about lichens is: Fungi and cyanobacteria both live in lichens independently.
Lichens are composite organisms consisting of a symbiotic relationship between a fungus (mycobiont) and a photosynthetic partner, usually an alga or cyanobacterium (photobiont). The fungus provides structure and protection, while the alga or cyanobacterium provides food through photosynthesis. This is a mutualistic relationship, meaning both organisms benefit. Option 3 is incorrect because the fungi and cyanobacteria (or algae) do not live independently within the lichen; their survival and growth are intertwined. The fungus and the photosynthetic partner are entirely dependent on each other for survival. The other options accurately describe characteristics of lichens.
- Option 1 is correct: Lichens often contain cyanobacteria as the photosynthetic partner.
- Option 2 is correct: Fungi are a fundamental component of lichens, forming a symbiotic relationship.
- Option 4 is correct: This describes the typical appearance and growth habit of many lichens.
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