Which algae produces agar?

Gracilaria

 The correct answer is Option (1) -Gracilaria

Algae Producing Agar:

1. Gracilaria:

• Agar Production: Gracilaria is a red algae that is a significant source of agar. Agar is extracted from the cell walls of Gracilaria species and is widely used in various applications, including as a solidifying agent in microbiological media, in the food industry, and in scientific research.

2. Chlorella:

• Agar Production: Chlorella is a green algae that is not known for agar production. Instead, Chlorella is valued for its high protein content and is often used as a nutritional supplement.

3. Sargassum:

• Agar Production: Sargassum, a brown algae, is not a primary source of agar. Brown algae may contain other valuable compounds like alginates but are not traditionally associated with agar production.

In summary, among the options provided, Gracilaria is the algae known for producing agar.