The green algae include unicellular and colonial flagellates, most with two flagella per cell, as well as various colonial, coccoid and filamentous forms, and macroscopic, multicellular seaweeds. In the Charales, the closest relatives of higher plants, full cellular differentiation of tissues occurs.There are about 8,000 species of green algae. Many species live most of their lives as single cells, while other species form coenobia (colonies), long filaments, or highly differentiated macroscopic seaweeds.n the Charales, the closest relatives of higher plants, full cellular differentiation of tissues occurs. There are about 8,000 species of green algae. Many species live most of their lives as single cells, while other species form coenobia (colonies), long filaments, or highly differentiated macroscopic seaweeds.
The most common anti-anxiety medications are called benzodiazepines. Benzodiazepines can treat generalized anxiety disorder. In the case of panic disorder or social phobia (social anxiety disorder), benzodiazepines are usually second-line treatments, behind SSRIs or other antidepressants.
1 Anti-anxiety medications. 2  These drugs are used to treat anxiety disorders, such as generalized anxiety disorder or panic disorder. 3  They may also help reduce agitation and insomnia.4  Long-term anti-anxiety drugs typically are antidepressants that also work for anxiety. Antidepressants are used to treat depression, anxiety and sometimes other conditions. 2  They can help improve symptoms such as sadness, hopelessness, lack of energy, difficulty concentrating and lack of interest in activities. 3  Antidepressants are not addictive and do not cause dependency. 4  Anti-anxiety medications.