https://www.khanacademy.org/science/revision-term-1-ka-science-grade-9/x07cce91f26fedd3c:week-2/x07cce91f26fedd3c:tissues/v/squamous-epithelium 2023-02-17T10:37:20.19163475Z Squamous epithelium What does the squamous epithelium look like, where is it found, and what are its functions? Let's find out in this video. Moumita Sen video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Squamous epithelium What does the squamous epithelium look like, where is it found, and what are its functions? Let's find out in this video. https://cdn.kastatic.org/ka-youtube-converted/UnDrKcVKMgk.mp4/UnDrKcVKMgk.mp4 307 Tissues https://www.khanacademy.org/science/revision-term-1-ka-science-grade-9/x07cce91f26fedd3c:week-2/x07cce91f26fedd3c:tissues/v/ciliated-epithelium 2023-02-27T23:01:04.184405959Z Ciliated epithelium Here we show how ciliated epithelium works. Moumita Sen video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Ciliated epithelium Here we show how ciliated epithelium works. https://cdn.kastatic.org/ka-youtube-converted/HV4c4pVXihc.mp4/HV4c4pVXihc.mp4 247 Tissues https://www.khanacademy.org/science/bmc-grade-9-science/x345505a97fc4a662:introduction-to-biotechnology/x345505a97fc4a662:types-of-tissue/v/glandular-epithelium 2023-03-02T23:01:10.378516427Z Glandular epithelium Let's understand what glandular epithelium is and how it forms. Moumita Sen video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Glandular epithelium Let's understand what glandular epithelium is and how it forms. https://cdn.kastatic.org/ka-youtube-converted/rscxaGBZ3uA.mp4/rscxaGBZ3uA.mp4 344 Tissues https://www.khanacademy.org/science/bridge-course-class-11th-biology/xfa1bbeaa3bc88e64:cells-and-tissues/xfa1bbeaa3bc88e64:tissues/e/epithelial-tissue 2025-02-03T04:27:09.422733204Z Epithelial tissue Let's differentiate between different types of epithelial tissues. Moumita Sen exercise https://www.khanacademy.org/science/bmc-grade-9-science/x345505a97fc4a662:introduction-to-biotechnology/x345505a97fc4a662:types-of-tissue/v/areolar-connective-tissue 2023-03-09T10:53:57.729825813Z Areolar connective tissue Let's explore what areolar connective tissue looks like and what it does. Moumita Sen video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Areolar connective tissue Let's explore what areolar connective tissue looks like and what it does. https://cdn.kastatic.org/ka-youtube-converted/_vIUtKhwhMA.mp4/_vIUtKhwhMA.mp4 285 Tissues https://www.khanacademy.org/science/bridge-course-class-11th-biology/xfa1bbeaa3bc88e64:cells-and-tissues/xfa1bbeaa3bc88e64:tissues/e/connective-tissue 2026-04-08T08:09:55.69362548Z Connective tissue Let's practice differentiating between different types of connective tissue. Moumita Sen exercise https://www.khanacademy.org/science/bridge-course-class-11th-biology/xfa1bbeaa3bc88e64:cells-and-tissues/xfa1bbeaa3bc88e64:tissues/e/muscular-tissue-and-neural-tissue 2026-04-03T18:30:01.793877038Z Muscular tissue and neural tissue This exercise covers the different types of muscular and neural tissues. Moumita Sen exercise https://www.khanacademy.org/science/revision-term-1-ka-science-grade-9/x07cce91f26fedd3c:week-2/x07cce91f26fedd3c:tissues/v/simple-permanent-tissues 2023-06-30T09:52:14.335573887Z Simple permanent tissues Let's explore what simple permanent tissues are Khadijatul Qubra video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Simple permanent tissues Let's explore what simple permanent tissues are https://cdn.kastatic.org/ka-youtube-converted/MW68KNYgZdg.mp4/MW68KNYgZdg.mp4 350 Tissues https://www.khanacademy.org/science/revision-term-1-tg-biology-class-9/x55ae3f7a2ac497cf:week-1/x55ae3f7a2ac497cf:plant-tissues/v/dermal-tissue-part-1 2025-05-29T08:44:44.739717086Z Dermal Tissue Part 1 Do plants have skin like we do? Sort of! In this video, we explore the dermal tissue system in plants — focusing on the epidermis, the plant's outermost layer that wraps around roots, stems, and leaves. Here’s what you’ll learn in this video: 1. What the epidermis is and how it's structured? 2. How it protects against water loss, mechanical injury, and fungal attacks? 3. What stomata are, where they’re found (spoiler: not just on leaves), and how they help in gas exchange and transpiration? 4. The role of guard cells in opening and closing stomata. 5. Why the lower epidermis has more stomata than the upper epidermis? Bitasta Datta video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Dermal Tissue Part 1 Do plants have skin like we do? Sort of! In this video, we explore the dermal tissue system in plants — focusing on the epidermis, the plant's outermost layer that wraps around roots, stems, and leaves. Here’s what you’ll learn in this video: 1. What the epidermis is and how it's structured? 2. How it protects against water loss, mechanical injury, and fungal attacks? 3. What stomata are, where they’re found (spoiler: not just on leaves), and how they help in gas exchange and transpiration? 4. The role of guard cells in opening and closing stomata. 5. Why the lower epidermis has more stomata than the upper epidermis? https://cdn.kastatic.org/ka-youtube-converted/UJ3e4gR8jUE.mp4/UJ3e4gR8jUE.mp4 557 Tissues https://www.khanacademy.org/science/revision-term-1-tg-biology-class-9/x55ae3f7a2ac497cf:week-1/x55ae3f7a2ac497cf:plant-tissues/v/dermal-tissue-part-2 2025-05-22T09:37:44.828372942Z Dermal Tissue Part 2 You’ve met the plant’s outer layer — the epidermis. But did you know it also makes waxy sunscreens and grows absorbent arms? In this video, we explore how the epidermis gets clever with special structures like the cuticle and root hairs: 1. Learn how cutin (a waxy chemical) forms the cuticle, a protective layer that blocks UV rays and reduces transpiration. 2. Discover why desert plants have an extra-thick cuticle to save water. 3. Understand how root hairs grow from epidermal cells to boost water and mineral absorption This is Part 2 of our journey into dermal tissues. Whether you're wondering how plants survive the heat or slurp up water from the soil — this one’s for you! Bitasta Datta video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Dermal Tissue Part 2 You’ve met the plant’s outer layer — the epidermis. But did you know it also makes waxy sunscreens and grows absorbent arms? In this video, we explore how the epidermis gets clever with special structures like the cuticle and root hairs: 1. Learn how cutin (a waxy chemical) forms the cuticle, a protective layer that blocks UV rays and reduces transpiration. 2. Discover why desert plants have an extra-thick cuticle to save water. 3. Understand how root hairs grow from epidermal cells to boost water and mineral absorption This is Part 2 of our journey into dermal tissues. Whether you're wondering how plants survive the heat or slurp up water from the soil — this one’s for you! https://cdn.kastatic.org/ka-youtube-converted/fpNQ0UOraYE.mp4/fpNQ0UOraYE.mp4 218 Tissues