The blue-green algae which are a little bit larger than bacteria are known as cyanobacteria.
Characteristics of Cyanobacteria:
- They are bluish because they have more blue pigments called cphycocyanin. Besides, some red pigments and chlorophyll are also
- They are prokaryotic.
- They are autophytic. Instead of the chloroplast, they have chromoplast. Photosynthesis can take place in
- Glycogen is their reserve food.
- All the members of this type of plant have a lubricating membrane around the cells.
- They don’t have sexual reproduction.
- They have no flagella.
- They may be one or many-celled and branched or un-branched filamentous type.
- Specialized cells called heterocysts and akenete may be formed in some filaments.