Botany - Biological Classification Question with Solution | TestHub

Cyanobacteria have autotrophic nutrition and can perform photosynthesis with the help of chlorophyll-a which is similar in green plants. They may be unicellular, colonial, or filamentous forms. Nitrogen fixation in cyanobacteria mainly occurs in specialized cells called heterocysts. Heterocysts are large-sized, pale-colored, non-motile, mucilage free thick-walled cells that are impermeable to oxygen. Euglena is the connecting link between plants and animals.