Which alga is cyanobacteria found in water bodies and contains B vitamins, calcium, and protein?

Which alga is cyanobacteria found in water bodies and contains B vitamins, calcium, and protein?

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

Answer: (D)

Cyanobacteria, commonly called blue-green algae, are widespread in water bodies and often form blooms when nutrients are plentiful. They’re photosynthetic bacteria, not plants, but in everyday terms they’re grouped with algae. Some cyanobacteria—like Spirulina—are well known for their high protein content and B vitamins, and they also contain minerals such as calcium, which fits the description. Green, red, and brown algae are different groups of eukaryotic algae with distinct nutrient profiles, so they don’t align as closely with the cyanobacteria clue. So blue-green algae best matches the idea of cyanobacteria found in water bodies that are rich in B vitamins, calcium, and protein.

Cyanobacteria, commonly called blue-green algae, are widespread in water bodies and often form blooms when nutrients are plentiful. They’re photosynthetic bacteria, not plants, but in everyday terms they’re grouped with algae. Some cyanobacteria—like Spirulina—are well known for their high protein content and B vitamins, and they also contain minerals such as calcium, which fits the description. Green, red, and brown algae are different groups of eukaryotic algae with distinct nutrient profiles, so they don’t align as closely with the cyanobacteria clue. So blue-green algae best matches the idea of cyanobacteria found in water bodies that are rich in B vitamins, calcium, and protein.