https://hi.khanacademy.org/science/up-class-9th-science/x699e14d392a80aeb:tissues/x699e14d392a80aeb:plant-tissues/v/simple-permanent-tissues 2025-05-18T16:41:06.47417478Z सरल स्थायी ऊतक (Simple permanent tissues) आइए देखें कि सरल स्थायी ऊतक क्या होते हैं। Khadijatul Qubra video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw सरल स्थायी ऊतक (Simple permanent tissues) आइए देखें कि सरल स्थायी ऊतक क्या होते हैं। https://cdn.kastatic.org/ka-youtube-converted/IRoJC9kt-zI.mp4/IRoJC9kt-zI.mp4 350 ऊतक (Tissues) https://hi.khanacademy.org/science/up-class-9th-science/x699e14d392a80aeb:tissues/x699e14d392a80aeb:plant-tissues/v/dermal-tissue-part-1 2025-07-26T10:15:16.714611931Z बाह्यत्वचा - भाग 1 (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 बाह्यत्वचा - भाग 1 (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/JiRH4q0tl_s.mp4/JiRH4q0tl_s.mp4 557 ऊतक (Tissues) https://hi.khanacademy.org/science/up-class-9th-science/x699e14d392a80aeb:tissues/x699e14d392a80aeb:plant-tissues/v/dermal-tissue-part-2 2025-07-26T10:15:16.714611931Z बाह्यत्वचा - भाग 2 (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 बाह्यत्वचा - भाग 2 (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/Da_30ynublg.mp4/Da_30ynublg.mp4 218 ऊतक (Tissues) https://hi.khanacademy.org/science/bridge-course-class-11th-biology/xfa1bbeaa3bc88e64:cells-and-tissues/xfa1bbeaa3bc88e64:tissues/e/permanent-tissue 2024-02-19T05:21:24.038756389Z सरल एवं जटिल स्थायी ऊतक (Simple and Complex Permanent tissue) आइए कुछ प्रश्न हल करें! vibhor exercise https://hi.khanacademy.org/science/revision-term-1-up-biology-grade-11/x51a5a18ba3a76050:week-2/x51a5a18ba3a76050:structural-organization-in-animals/v/ciliated-epithelium 2023-05-19T08:07:16.414331265Z पक्ष्माभी (Ciliated) एपिथीलियम चलिए देखते हैं कि पक्ष्माभी एपिथीलियम कैसे काम करता है। Moumita Sen video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw पक्ष्माभी (Ciliated) एपिथीलियम चलिए देखते हैं कि पक्ष्माभी एपिथीलियम कैसे काम करता है। https://cdn.kastatic.org/ka-youtube-converted/vfkOhAfn2xA.mp4/vfkOhAfn2xA.mp4 247 ऊतक (Tissues) https://hi.khanacademy.org/science/up-class-9th-science/x699e14d392a80aeb:tissues/x699e14d392a80aeb:animal-tissues/v/glandular-epithelium 2023-05-19T08:07:16.414331265Z ग्रंथिल (Glandular) एपिथीलियम आइए समझें कि ग्रंथिल एपिथीलियम क्या है और ये कैसे बनती है। Moumita Sen video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw ग्रंथिल (Glandular) एपिथीलियम आइए समझें कि ग्रंथिल एपिथीलियम क्या है और ये कैसे बनती है। https://cdn.kastatic.org/ka-youtube-converted/LPgsgFbotvU.mp4/LPgsgFbotvU.mp4 344 ऊतक (Tissues) https://hi.khanacademy.org/science/revision-term-1-up-biology-grade-11/x51a5a18ba3a76050:week-2/x51a5a18ba3a76050:structural-organization-in-animals/e/epithelial-tissue 2025-03-30T13:53:21.012447364Z एपिथीलियम ऊतक (Epithelial tissue) आइए विभिन्न प्रकार के एपिथीलियमी ऊतकों (Epithelial tissues) के बीच भेद करना सीखें। Moumita Sen exercise https://hi.khanacademy.org/science/up-class-11th-biology/x6cdb38ba1d131d88:locomotion-and-movement/x6cdb38ba1d131d88:joins-and-disorders-of-the-musculoskeletal-system/v/ligaments-tendons-and-joints 2025-03-27T04:20:49.320426723Z स्नायु , कंडरा और जोड़ . Tracy Kim Kovach video https://cdn.kastatic.org/googleusercontent/P15q_jjISbUPZZYvhOWkN9iREKHIaAU8Xqsb42MHJDGJcjLkk5FNPU_taTYE7RP-ZBJ4HxSSasQpZSjsz4GYzqvN स्नायु , कंडरा और जोड़ . https://cdn.kastatic.org/ka-youtube-converted/gBgVJjPoHZI.mp4/gBgVJjPoHZI.mp4 167 ऊतक (Tissues) https://hi.khanacademy.org/science/revision-term-1-up-biology-grade-11/x51a5a18ba3a76050:week-2/x51a5a18ba3a76050:structural-organization-in-animals/e/connective-tissue 2025-03-30T13:53:21.012447364Z संयोजी ऊतक (Connective tissue) आइए विभिन्न प्रकार के संयोजी ऊतकों (Connective tissues) के बीच भेद करना सीखें। Moumita Sen exercise https://hi.khanacademy.org/science/revision-term-1-up-biology-grade-11/x51a5a18ba3a76050:week-2/x51a5a18ba3a76050:structural-organization-in-animals/e/muscular-tissue-and-neural-tissue 2025-03-30T13:53:21.012447364Z पेशीय (Muscular) ऊतक तथा तंत्रिका (neural) ऊतक यह अभ्यास विभिन्न प्रकार के पेशीय और तंत्रिका ऊतकों के बारे में जानकारी देता है। Moumita Sen exercise