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Curated by: Khan Academy India - English (2 videos)
Description: 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? Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! ( https://www.khanacademy.org/science/ncert-class-9-science/x7e8d66f732d28ce4:tissues ) Timestamps: 0:00 - Introduction 0:37 - The structure and function of Epidermis 4:47 - Stomata 5:57 - Number of Stomata 7:43 - Myth-buster segment (Stomata are only present on the leaves) 8:37 - Summary Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Bitasta Datta