https://www.khanacademy.org/science/jnv-biology-grade-11-revision-course-full-term/x3ed1e7eacb19007a:week-1/x3ed1e7eacb19007a:plant-kingdom/v/classification-of-algae 2025-12-04T12:20:47.459943029Z Classification of Algae Green, brown, red - algae come in more varieties than you might think. The video breaks down how these ancient organisms are classified beyond just their colours. We explore the differences in their habitats, cell wall composition, and storage methods that set each group apart. Learn about the distinct photosynthetic pigments that define major algal groups and compare their varied reproductive strategies. From simple pond scum to complex seaweeds, see examples of each classification and understand what makes them unique in the biological world. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Classification of Algae Green, brown, red - algae come in more varieties than you might think. The video breaks down how these ancient organisms are classified beyond just their colours. We explore the differences in their habitats, cell wall composition, and storage methods that set each group apart. Learn about the distinct photosynthetic pigments that define major algal groups and compare their varied reproductive strategies. From simple pond scum to complex seaweeds, see examples of each classification and understand what makes them unique in the biological world. https://cdn.kastatic.org/ka-youtube-converted/ckzUEkbqoSs.mp4/ckzUEkbqoSs.mp4 520 Plant Kingdom https://www.khanacademy.org/science/jnv-biology-grade-11-revision-course-full-term/x3ed1e7eacb19007a:week-1/x3ed1e7eacb19007a:plant-kingdom/e/different-types-of-algae-in-plant-kingdom 2025-12-20T13:37:54.168978917Z Different Types of Algae in Plant Kingdom This exercise tests the key characteristics of algae, including how they survive in nutrient-poor and low-light habitats, how their pigments and thallus forms support photosynthesis, how different algal forms are classified, and how they reproduce under changing conditions. Through short, realistic scenarios, you will apply ideas about autotrophy, structural organization, asexual and sexual reproduction, and the ecological and industrial importance of algae. Khan Academy exercise https://www.khanacademy.org/science/biology-essentials/x35f699f4a3703d4e:nomenclature-and-taxonomy/x35f699f4a3703d4e:plant-kingdom/v/bryophytes 2023-01-26T10:21:56.90843157Z Bryophytes Introducing the bryophytes: one of the very first plants to colonize our lands back in the day! In this video, we’re going to talk all about bryophytes and their life cycle. We’ll explore their habitats, how they reproduce and the role these simple fellows play in the goodwill of our environment. Sulagna Das video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Bryophytes Introducing the bryophytes: one of the very first plants to colonize our lands back in the day! In this video, we’re going to talk all about bryophytes and their life cycle. We’ll explore their habitats, how they reproduce and the role these simple fellows play in the goodwill of our environment. https://cdn.kastatic.org/ka-youtube-converted/Tp1wRI5so-4.mp4/Tp1wRI5so-4.mp4 449 Plant Kingdom https://www.khanacademy.org/science/revision-term-1-ka-biology-grade-11/x1474e0ca4285b2f5:week-1/x1474e0ca4285b2f5:plant-kingdom/v/pteridophytes 2023-02-04T23:01:02.978880581Z Pteridophytes In this video, we talk all about pteridophytes: the first plants ever to have vascular tissues! We take a closer look at their life cycle and find out why they are the “in-between version” of bryophytes and higher plants. Sulagna Das video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Pteridophytes In this video, we talk all about pteridophytes: the first plants ever to have vascular tissues! We take a closer look at their life cycle and find out why they are the “in-between version” of bryophytes and higher plants. https://cdn.kastatic.org/ka-youtube-converted/sCLTyZHbVpk.mp4/sCLTyZHbVpk.mp4 322 Plant Kingdom https://www.khanacademy.org/science/revision-term-1-ka-biology-grade-11/x1474e0ca4285b2f5:week-1/x1474e0ca4285b2f5:plant-kingdom/e/bryophytes-and-pteridophytes 2024-08-15T06:03:54.799148768Z Bryophytes and pteridophytes Characteristics of bryophytes and pteridophytes Moumita Sen exercise https://www.khanacademy.org/science/revision-term-1-od-grade-9-life-science/x26da6cb4aecf5718:week-1/x26da6cb4aecf5718:diversity-in-living-organisms/v/gymnosperms-the-male-cone 2023-04-06T11:41:49.823875081Z Gymnosperms - the male cone Let's look at the structure of the male cone of gymnosperms and learn about the strobilus, the microsporophyll, the microsporangium, and the male gametophyte. Moumita Sen video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Gymnosperms - the male cone Let's look at the structure of the male cone of gymnosperms and learn about the strobilus, the microsporophyll, the microsporangium, and the male gametophyte. https://cdn.kastatic.org/ka-youtube-converted/793KjbILDfM.mp4/793KjbILDfM.mp4 275 Plant Kingdom https://www.khanacademy.org/science/revision-term-1-ka-biology-grade-11/x1474e0ca4285b2f5:week-1/x1474e0ca4285b2f5:plant-kingdom/v/reproduction-in-gymnosperms 2023-04-11T08:28:16.88269088Z Reproduction in gymnosperms In this video, we take a detailed look at the female cone in gymnosperms and then explore how gymnosperms reproduce. Moumita Sen video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Reproduction in gymnosperms In this video, we take a detailed look at the female cone in gymnosperms and then explore how gymnosperms reproduce. https://cdn.kastatic.org/ka-youtube-converted/VUeF6Xm5M5U.mp4/VUeF6Xm5M5U.mp4 479 Plant Kingdom https://www.khanacademy.org/science/jnv-biology-grade-11-revision-course-full-term/x3ed1e7eacb19007a:week-1/x3ed1e7eacb19007a:plant-kingdom/v/general-characteristics-and-reproduction-in-angiosperms 2025-12-30T05:23:12.060268985Z General Characteristics and Reproduction in Angiosperms Why do flowering plants dominate nearly every ecosystem on Earth? From the grasslands and forests to our own backyards. In this video, we dive into the fascinating world of angiosperms, the most advanced and successful group of plants. Uncover the adaptations that gave them their evolutionary edge. Did you know that hiding their seeds was an important evolutionary upgrade for angiosperms? Learn the importance of flowers and fruits and how they are formed. Angiosperms were so successful, evolution gave them 2 fertilisations. Watch and learn why. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw General Characteristics and Reproduction in Angiosperms Why do flowering plants dominate nearly every ecosystem on Earth? From the grasslands and forests to our own backyards. In this video, we dive into the fascinating world of angiosperms, the most advanced and successful group of plants. Uncover the adaptations that gave them their evolutionary edge. Did you know that hiding their seeds was an important evolutionary upgrade for angiosperms? Learn the importance of flowers and fruits and how they are formed. Angiosperms were so successful, evolution gave them 2 fertilisations. Watch and learn why. https://cdn.kastatic.org/ka-youtube-converted/Cu6UqzrIRs4.mp4/Cu6UqzrIRs4.mp4 460 Plant Kingdom 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/biology-essentials/x35f699f4a3703d4e:nomenclature-and-taxonomy/x35f699f4a3703d4e:plant-kingdom/v/alternation-of-generations 2023-03-03T23:12:40.787581739Z Alternation of Generations In this video, we find out what a plant's life really like. Does it have a life cycle like us? Or is it something completely different? If it is, how different is it from ours? Let's check it out. Sulagna Das video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Alternation of Generations In this video, we find out what a plant's life really like. Does it have a life cycle like us? Or is it something completely different? If it is, how different is it from ours? Let's check it out. https://cdn.kastatic.org/ka-youtube-converted/a-mCprFOBvI.mp4/a-mCprFOBvI.mp4 793 Plant Kingdom https://www.khanacademy.org/science/jnv-biology-grade-11-revision-course-full-term/x3ed1e7eacb19007a:week-1/x3ed1e7eacb19007a:plant-kingdom/e/alternation-of-generations 2025-12-20T13:37:54.168978917Z Alternation of Generations This exercise tests your understanding of alternation of generations by applying core ideas to realistic life-cycle scenarios. You will identify where meiosis, mitosis, and fertilization occur, distinguish between haplontic, diplontic, and haplo-diplontic patterns, and link dominance of gametophyte or sporophyte stages to specific groups such as algae, bryophytes, pteridophytes, and Fucus. Khan Academy exercise