Mannitol is the stored food in:
Porphyra
Fucus
Gracillaria
Chara
Phaeophyceae / Brown algae -
Major pigments present are chlorophyll a, c, carotenoids and xanthophylls (fucoxanthin).
Reserve food is carbohydrate (laminarin or mannitol).
- wherein
Eg. Ectocarpus, Dictyota, Sargassum.
Fucus belongs to class Phaeophyceae
Option 1)
Porphyra
This is incorrect option
Option 2)
Fucus
This is correct option
Option 3)
Gracillaria
This is incorrect option
Option 4)
Chara
This is incorrect option