Which of the following algae are used by space travellers as food suppliments? A. Gracilaria, Gelidium B. Volvox, Ulothrix C. Spirogyra, Kelps D. Spirulina, Chlorella
Option D Chlorella (green alga), as a food supplement is rich in protein and carbohydrates. It yields about 30% proteins, 15% lipids, 30% carbohydrates, and 5% ash. Spirulina platensis (blue-green alga) is one of the richest sources of protein and vitamin B2. In long-range space exploration, scientists have turned to Chlorella and Spirulina to use them as portable oxygen generators and food sources.
