Agar is obtained from which of the following algae
The correct option is : D
Explanation of the correct option:
Explanation of the incorrect options :
Sargassum is an example of free-floating brown algae, has an inner cellulose layer and outer gelatinous coat, which is used as an emulsifying agent and a stabilizer.
Option B :
Option C :
Spirogyra are filamentous, free-floating green alga, which can be used as antibiotic, antiviral and acts as an antioxidant.
Final answer: Agar is obtained from alga Gelidium.