The sixth edition of ‘Botany for Degree students', has been brought out with a thorough revision of the whole text including the rewriting of many portions and addition of several new topics on the basis of recent researches, thereby covering as far as possible the prescribed syllabi of several universities. "In this text, Morphology and Embryology have been dealt together. Several new topics such as Morphology of stamen, Morphology of carpel, Phyllode theory have been included. Topics like Megagametogenesis and Embryogeny have been thoroughly modified and rewritten. A new chapter on Ecosystem (structural and functional aspects) with reference to food chain and food web has been added. Special mentions have also been made about Desertification, Eutrophication. On the basis of recent researches in Biochemistry, the mechanism of photosynthesis and that of respiration in Physiology, have been elaborated and some new topics added. Likewise, the readers will notice many necessary changes and new additions in other sections of the text. Thus, this improved and enlarged sixth edition of ‘BOTANY for Degree Students' will definitely meet the needs of degree students in India and abroad. "