Algae deals with the important system of classification of the plant kingdom, an account of thallophytes, life histories of important representatives of each class of algae and various aspects of the life cycles of algae. Coverage of latest researches in the current edition of the book make it more useful for students appearing in competitive examinations.CONTENTS1. Algae: General CharactersOccurrenceRange of thallus structur, Structure of Algal CellReproduction Types of life cycle.2. Classification of algaeEvolution of Algal ClassificationClassification Proposed by FritschClassification Proposed by Smith's Classification Proposed by G. F. Papenfuss (1955)Classification Proposed by V. J. Chapman (1962)Classification Proposed by Christensen (1964)Classification Proposed by F. E. Round (1973)Classification Proposed by V. J. Chapman and D. J. Chapman (1973)Classification Proposed by H. C. Bold and M. J. Wynne (1978) Classification Proposed by R. E. Lee (2008)3. Myxophyceae (Cyanophyceae) General Character Classification, Occurrence of Cyanophyceae, Cell Structure, Heterocysts, Origin of Cyanophyceae, Economic Importance of Cyanophyceae.4. Chroococcales Family. Chroococcaceae; Gloeacapsa, Microcystis,5. NostocalesFamily. Oscillatoriaceae. Oscillatoria, spirulina, Family. Nostocaceae; Nostoc, Anabena, Aulosira, Family. Scytonemataceae; Scytonema, Family. Rivulariaceae; Gloeotrichia, Rivularia.6. Stigonematales Family: Stigonemataceae; Stigonema7. ChlorophyceaeGeneral characteristicClassification and Alternation of Generations8. VolvocalesFamily. Chlamydomonadaceae: ChlamydomonasFamily.Volvocaceae; Volvox, Pandorina, Eudorina 9. ChlorococcalesFamily. Chlorellaceae; Chlorella, ChlorococcumFamily. Hydrodictyaceae; HydrodictyonFamily. Coelastraceae; Scenedesmus10. Ulotrichales Family. Ulvaceae;Ulva; EnteromorphaFamily. Ulotrichaceae; Ulothrix11. CladophoralesFamily. Cladophoraceae: Cladophora12. Chaetophorales.........148-178Family. Chaetophoraceae; Fritschiella, Chaetophora, DraparnaldiaFamily. Coleochaetaceae; ColeochaeteFamily. Trentepohliaceae: TrentepohliaFamily. Pleurococcaceae: Pleurococcus13. Oedogoniales Family. Oedogoniaceae: Oedogonium14. ConjugalesFamily: Zygnemaceae: Spirogyra, Zygnema Family: Desmidiaceae: Cosmarium15. Siphonales Family. Caulerpaceae: Bryopsi, CaulerpaFamily Codiaceae: CodiumFamily. Vaucheriaceae: Vaucheria16. CharalesFamily. Characeae: Chara17. Bacillariophyceae General Characters and Classification 18. Pennales Family. Naviculoi