Question

Which one of the following lichens are used to obtain usnic acid?

• A. {Usnea} and {Cladonia}
• B. {Evernia} and {Ramalina}
• C. {Rocella} and {Lassalia}
• D. {Usnea} and {Citraria

Hint:

{Usnic acid → lichen antibiotic}.

Answer 1

The Correct Option is A

Step 1: Understanding usnic acid.
Usnic acid is a secondary metabolite obtained from certain lichens and has antibiotic properties.

Step 2: Identifying source lichens.
Usnic acid is commonly extracted from lichens such as {Usnea} and {Cladonia}.

Step 3: Conclusion.
Thus, the correct answer is {Usnea and {Cladonia}}.