Which one of the following statement is wrong?
Chlorella and Spirulina are used as food in space travels.
Mannitol is reserved food material in Rhodophyceae.
Algin and carrageenan are products of algae.
Agar -agar is obtained from Gelidium and Gracilaria.
Mannitol are laminarin are reserve food materials in Phaeophyceae.