Which alga is described as containing minerals such as calcium, copper, iodine, iron, and magnesium?

• A. Green Algae
• B. Brown Algae
• C. Red Algae
• D. Blue-Green Algae

Answer: (A)

Algae accumulate minerals from their water environment, and different groups tend to have characteristic mineral profiles. Green algae, including species often used in skincare like Chlorella, are noted for a broad range of minerals, commonly listed as calcium, copper, iodine, iron, and magnesium. That combination matches green algae as a general mineral source, making it the best fit for the description. Other types are usually highlighted for more specific minerals—brown algae, for example, are well known for higher iodine content—so they don’t align with the exact mineral mix described as closely.