A great video lecture conducted by experienced biology teacher on 9th class biology chapter 3 topic1 history of classification systems. Get full understanding or ask any questions.
Two Kingdom Classification System, ch 3, lec 2, History of Classification Systems - 9th Class Biology
7:28
Three Kingdom Classification System, ch 3, lec 2, History of Classification Systems - 9th Class Biology
6:11
Five Kingdom Classification System, ch 3, lec 2, History of Classification Systems - 9th Class Biology
14:56
Status of Viruses, ch 3, lec 2, History of Classification Systems - 9th Class Biology
2:56
