https://www.khanacademy.org/science/revision-term-1-ka-biology-grade-11/x1474e0ca4285b2f5:week-1/x1474e0ca4285b2f5:plant-kingdom/e/gymnosperms-and-angiosperms 2026-04-08T01:15:04.085520103Z Gymnosperms and angiosperms The exercise covers the characteristics and reproduction of gymnosperms and angiosperms. Moumita Sen exercise https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-1/x00110b31861f2508:diversity-in-the-living-world/v/types-of-seeds 2025-04-04T08:00:46.915367394Z Types of Seeds Description: Learn about the different types of seeds based on cotyledons! Explore the differences in leaves, roots, and flowers of monocots and dicots in this fun and educational middle school science video. Joel Prakash Stephen video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Types of Seeds Description: Learn about the different types of seeds based on cotyledons! Explore the differences in leaves, roots, and flowers of monocots and dicots in this fun and educational middle school science video. https://cdn.kastatic.org/ka-youtube-converted/FYFE8nu0hqc.mp4/FYFE8nu0hqc.mp4 368 Angiosperms https://www.khanacademy.org/science/ka-biology-grade-12/x406cf103e0507862:sexual-reproduction-in-flowering-plants/x406cf103e0507862:pre-fertilization-events/e/megasporogenesis-and-the-embryo-sac 2026-04-07T23:17:37.123726494Z Megasporogenesis and the embryo sac Megasporogenesis, embryo sac, antipodal cells, egg apparatus, filiform apparatus, ploidy, megaspore mother cell (MMC). exercise https://www.khanacademy.org/science/ka-biology-grade-12/x406cf103e0507862:sexual-reproduction-in-flowering-plants/x406cf103e0507862:pre-fertilization-events/e/features-of-pollen-grains 2024-08-15T06:51:54.562347673Z Features of pollen grains Exine, intine, sporopollenin, generative and vegetative cells, viability. exercise https://www.khanacademy.org/science/in-in-class-10-biology/in-in-reproduction/in-in-sexual-reproduction-in-plants/e/in-in-pollination-and-fertilisation-in-plants 2026-03-06T17:50:38.494926415Z Pollination and fertilisation in plants This exercise provides practice for high school level concepts of pollination and fertilisation. saiyem exercise https://www.khanacademy.org/science/ka-biology-grade-12/x406cf103e0507862:sexual-reproduction-in-flowering-plants/x406cf103e0507862:pollination-and-double-fertilization/e/double-fertilization 2024-08-15T06:51:54.562347673Z Double fertilization Syngamy, triple fusion, ploidy of zygote and embryo, ploidy of primary endosperm nucleus/cell. mahathi exercise https://www.khanacademy.org/science/ka-science-grade-6/x12c13c153ec99496:living-creatures-exploring-their-characteristics/x12c13c153ec99496:life-processes-in-plants/e/conditions-for-germination 2026-04-07T23:36:17.218592739Z Conditions for Germination In this exercise we'll explore, how factors such air, water and warmth, affect the germination of seeds Bitasta Datta exercise