How many species of ascomycota occur in lichen symbiotic association?
Correct answer: C. 50%
- A. 30%
- B. 40%
- C. 50%
- D. 60%
Explanation
About 50% of known Ascomycota species are associated with lichens, in which the fungus receives organic nutrients and the photosynthetic partner supplies carbohydrates. The 60% option is the likely distractor because it overestimates the proportion of ascomycete species living in this association.
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