Question :
Choose the INCORRECT statement about lichens.
Option :
- Fungi and cyanobacteria both live in lichens independently.
- Lichens contain cyanobacteria.
- Lichens are seen as slow-growing large coloured patches on the bark of trees.
- Fungi are found in lichens living a symbiotic life.
correct answer : a)
The correct answer is: (a) Fungi and cyanobacteria both live in lichens independently ✅
Explanation:
Lichens are a symbiotic association between a fungus (mycobiont) and a photosynthetic partner (algae or cyanobacteria — called photobiont).
They do not live independently within the lichen — the two organisms are interdependent:
The fungus provides structure, protection, and water retention.
The photobiont provides food via photosynthesis.
(b) is correct: Some lichens contain cyanobacteria as the photosynthetic partner.
(c) is correct: They often appear as slow-growing coloured patches on tree bark, rocks, or soil.
(d) is correct: Fungi are part of lichens, living in a mutualistic relationship.
💡 Remember: In lichens, neither partner is “independent” — they survive together as one functional unit.