https://www.khanacademy.org/science/up-biology-grade-11-revision-course-full-term/x01ceb15d0be61009:week-1/x01ceb15d0be61009:untitled-578/v/arithmetic-and-geometric-growth-comparison 2022-12-30T12:39:12.769182623Z Arithmetic and geometric growth - comparison Here we explore the similarities and differences between arithmetic growth and geometric growth. Moumita Sen video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Arithmetic and geometric growth - comparison Here we explore the similarities and differences between arithmetic growth and geometric growth. https://cdn.kastatic.org/ka-youtube-converted/PxJBv1_dMmU.mp4/PxJBv1_dMmU.mp4 402 Plant Growth and Development https://www.khanacademy.org/science/up-biology-grade-11-revision-course-full-term/x01ceb15d0be61009:week-1/x01ceb15d0be61009:untitled-578/v/differentiation-dedifferentiation-and-re-differentiation 2025-10-01T19:00:52.430915626Z Differentiation, Dedifferentiation and Re-differentiation Can a cell forget what it is and become something entirely new? In this video, we explore the dynamic world of plant cells—how they take up specific roles, how they can reverse course and start dividing again, and how they can transform into something completely different. What triggers these shifts? How does a cell’s position shape its future? Join us as we unravel the mysteries of differentiation, dedifferentiation, and re-differentiation in plants! Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Differentiation, Dedifferentiation and Re-differentiation Can a cell forget what it is and become something entirely new? In this video, we explore the dynamic world of plant cells—how they take up specific roles, how they can reverse course and start dividing again, and how they can transform into something completely different. What triggers these shifts? How does a cell’s position shape its future? Join us as we unravel the mysteries of differentiation, dedifferentiation, and re-differentiation in plants! https://cdn.kastatic.org/ka-youtube-converted/peIX5QVK958.mp4/peIX5QVK958.mp4 470 Plant Growth and Development https://www.khanacademy.org/science/up-biology-grade-11-revision-course-full-term/x01ceb15d0be61009:week-1/x01ceb15d0be61009:untitled-578/e/plant-growth 2026-04-07T23:36:17.218592739Z Plant growth This exercise tests the concepts of plant growth and growth rates. Moumita Sen exercise https://www.khanacademy.org/science/up-biology-grade-11-revision-course-full-term/x01ceb15d0be61009:week-1/x01ceb15d0be61009:untitled-578/v/major-plant-hormones-how-to-remember-control-coordination-biology-khan-academy 2020-09-09T11:53:26Z Major plant hormones (& how to remember) Let's learn the 5 major plant hormones and how we can remember their functions. Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/GOt6IQceO9fAInrdiRbshZMVi9Hidjf2NT1SLXtCeKORqHB1ye1hPQhUo1BSSzYrz9op-qumpLE0jqTnV73HFPlG Major plant hormones (& how to remember) Let's learn the 5 major plant hormones and how we can remember their functions. https://cdn.kastatic.org/ka-youtube-converted/dV9QcGs58l0.mp4/dV9QcGs58l0.mp4 875 Plant Growth and Development https://www.khanacademy.org/science/up-biology-grade-11-revision-course-full-term/x01ceb15d0be61009:week-1/x01ceb15d0be61009:untitled-578/e/auxins-gibberellins-and-cytokinins 2026-04-07T23:55:07.30621384Z Auxin, gibberellin, and cytokinin This exercise deals with the effects of the plant hormones auxin, gibberellin, and cytokinin. Moumita Sen exercise https://www.khanacademy.org/science/up-biology-grade-11-revision-course-full-term/x01ceb15d0be61009:week-1/x01ceb15d0be61009:untitled-578/e/ethylene-and-abscisic-acid 2026-01-24T15:20:42.617490009Z Ethylene and abscisic acid This exercise has questions on ethylene and abscisic acid and their interplay with other plant hormones. Moumita Sen exercise https://www.khanacademy.org/science/biology/plant-biology/plant-responses-to-light-cues/v/photoperiodism 2021-03-23T22:19:10Z Photoperiodism How plants can regulate processes like flowering based on day length (photoperiod). video https://cdn.kastatic.org/googleusercontent/VygHoElR533-C9DE4RLKSkFWa6cPqsxLGAiYGkWWMnWIX1wAL2ER8ubwH7MFOe5v5r5r-qpm_3_yv3D7SnfD5L4c Photoperiodism How plants can regulate processes like flowering based on day length (photoperiod). https://cdn.kastatic.org/ka-youtube-converted/AQf3gKTCffs.mp4/AQf3gKTCffs.mp4 476 Plant Growth and Development https://www.khanacademy.org/science/up-biology-grade-11-revision-course-full-term/x01ceb15d0be61009:week-1/x01ceb15d0be61009:untitled-578/v/vernalization 2023-01-12T07:30:45.138114799Z Vernalization Let's understand vernalization and why plants need it. Moumita Sen video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Vernalization Let's understand vernalization and why plants need it. https://cdn.kastatic.org/ka-youtube-converted/2LTgQ1u7EcQ.mp4/2LTgQ1u7EcQ.mp4 333 Plant Growth and Development https://www.khanacademy.org/science/up-biology-grade-11-revision-course-full-term/x01ceb15d0be61009:week-1/x01ceb15d0be61009:untitled-578/v/seed-dormancy 2023-01-06T12:55:27.075841988Z Seed dormancy Let's explore the whys and hows of seed dormancy. Moumita Sen video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Seed dormancy Let's explore the whys and hows of seed dormancy. https://cdn.kastatic.org/ka-youtube-converted/8yXnB5_Ew8U.mp4/8yXnB5_Ew8U.mp4 537 Plant Growth and Development https://www.khanacademy.org/science/up-biology-grade-11-revision-course-full-term/x01ceb15d0be61009:week-1/x01ceb15d0be61009:untitled-578/e/photoperiodism-vernalization-and-seed-dormancy 2026-01-01T06:31:39.622886371Z Photoperiodism, vernalization, and seed dormancy This exercise tests your understanding of photoperiodism, vernalization, and seed dormancy. Moumita Sen exercise