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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About Classification of Biological Molecules
Biological molecules are classified as carbohydrates, lipids, proteins and nucleic acids, with water, minerals and vitamins also supporting cellular processes. The key distinctions involve their monomers, chemical bonds, structures and functions, including glucose and starch, fatty acids and triglycerides, amino acids and polypeptides, and nucleotides in DNA and RNA.
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