https://www.khanacademy.org/science/revision-term-1-od-grade-9-life-science/x26da6cb4aecf5718:week-1/x26da6cb4aecf5718:diversity-in-living-organisms/v/systems-of-classification 2023-03-03T23:12:40.787581739Z Systems of Classification From grouping living beings based on the number of legs to introducing new domains, classification has been one rollercoaster of a ride. In this video, we take a walk down the "history" lane and find out how biological classification has changed over the last few centuries. Sulagna Das video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Systems of Classification From grouping living beings based on the number of legs to introducing new domains, classification has been one rollercoaster of a ride. In this video, we take a walk down the "history" lane and find out how biological classification has changed over the last few centuries. https://cdn.kastatic.org/ka-youtube-converted/mrheet-2osg.mp4/mrheet-2osg.mp4 500 Biological Classification https://www.khanacademy.org/science/biology-essentials/x35f699f4a3703d4e:nomenclature-and-taxonomy/x35f699f4a3703d4e:introduction-to-biological-classification/e/introduction-to-biological-classification 2026-04-08T00:36:09.500768563Z Introduction to Biological Classification Prokaryotes and eukaryotes and systems of classification Moumita Sen exercise https://www.khanacademy.org/science/revision-term-1-ka-biology-grade-11/x1474e0ca4285b2f5:week-1/x1474e0ca4285b2f5:biological-classification/v/bacteria-class-11 2023-03-03T23:12:40.787581739Z Bacteria In this video, we talk about one of the most ancient and abundant organisms that has ever existed on our planet: bacteria! We explore the characteristics and diversity of the domain and find out how our lives are always entwined with them. Sulagna Das video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Bacteria In this video, we talk about one of the most ancient and abundant organisms that has ever existed on our planet: bacteria! We explore the characteristics and diversity of the domain and find out how our lives are always entwined with them. https://cdn.kastatic.org/ka-youtube-converted/m6hPxNLWFn8.mp4/m6hPxNLWFn8.mp4 663 Biological Classification https://www.khanacademy.org/science/revision-term-1-ka-biology-grade-11/x1474e0ca4285b2f5:week-1/x1474e0ca4285b2f5:biological-classification/e/archaea 2026-04-07T23:55:07.30621384Z Archaea and Bacteria Description of Archaea and examples Moumita Sen exercise https://www.khanacademy.org/science/biology-essentials/x35f699f4a3703d4e:nomenclature-and-taxonomy/x35f699f4a3703d4e:protista/v/protista 2023-03-03T23:12:40.787581739Z Protista In this video, we explore one of the most diverse kingdoms to ever exist: Protista. We discuss about the organisms, their unique characteristics and continue to get our minds blown in the process. Sulagna Das video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Protista In this video, we explore one of the most diverse kingdoms to ever exist: Protista. We discuss about the organisms, their unique characteristics and continue to get our minds blown in the process. https://cdn.kastatic.org/ka-youtube-converted/YhxymkJVDWA.mp4/YhxymkJVDWA.mp4 429 Biological Classification https://www.khanacademy.org/science/revision-term-1-ka-biology-grade-11/x1474e0ca4285b2f5:week-1/x1474e0ca4285b2f5:biological-classification/e/protista 2025-01-27T11:20:52.400099217Z Protista Overview of kingdom Protista, and plant-like protists and fungi-like protists in-depth Moumita Sen exercise https://www.khanacademy.org/science/biology-essentials/x35f699f4a3703d4e:nomenclature-and-taxonomy/x35f699f4a3703d4e:fungi/v/classification-of-fungi 2023-03-03T23:12:40.787581739Z Classification of Fungi In this video, we talk about the different phyla of fungi and how the classification system of fungi is ever-changing and ever-improving. Sulagna Das video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Classification of Fungi In this video, we talk about the different phyla of fungi and how the classification system of fungi is ever-changing and ever-improving. https://cdn.kastatic.org/ka-youtube-converted/ea3WvtrszWk.mp4/ea3WvtrszWk.mp4 849 Biological Classification https://www.khanacademy.org/science/revision-term-1-ka-biology-grade-11/x1474e0ca4285b2f5:week-1/x1474e0ca4285b2f5:biological-classification/e/classification-of-fungi 2025-01-27T11:20:52.400099217Z Classification of fungi This exercise tests the understanding of the general principles of the classification of fungi. Moumita Sen exercise https://www.khanacademy.org/science/biology/biology-of-viruses/virus-biology/v/viruses 2021-03-18T10:33:24Z Viruses Introduction to viruses. Sal Khan video https://cdn.kastatic.org/googleusercontent/Y2goQonuPymd0AbVnv5A_J2p_tFV9xQOSXJSE3jjI24wWdtWF6HSQLnL064BIg4AnlgVzV1kDhSu5XwzA6C22hY Viruses Introduction to viruses. https://cdn.kastatic.org/ka-youtube-converted/0h5Jd7sgQWY.mp4/0h5Jd7sgQWY.mp4 1397 Biological Classification https://www.khanacademy.org/science/biology-essentials/x35f699f4a3703d4e:nomenclature-and-taxonomy/x35f699f4a3703d4e:viruses-and-subviral-particles/e/viruses 2024-08-15T06:03:54.799148768Z Viruses, viroids, and prions This exercise covers the characteristics of viruses, viroids, and prions. Moumita Sen exercise