Mannitol is the stored food in: a. Chara b. Porphyra c. Fucus d. Gracillaria
Option C. Algae are capable of storing food to produce energy when they are required. Starch, oils, floridean starch, laminarin are the food materials stored in algae. Mannitol is a form of complex carbohydrates stored as food in some definite algae. The members of Phaeophyceae, also known as brown algae, stored food as mannitol. Mannitol represents the major end product in theses algae and is the main form of carbon storage. It is formed by reduction of fructose-6-phosphate. Another important utilisation of mannitol is its use as osmoprotectant as well as an antioxidant.
