Epidermis: The epidermis consists of a cuticle. Get access risk-free for 30 days, © copyright 2020 QS Study. Epidermis and periderm are the dermal tissues in vascular plants. Functions of the epidermis in plant development. The lower epidermis contains stomata cells that help prevent water loss and regulate the exchange of gases such as oxygen and carbon dioxide, enabling plants to survive. This is generally one cell in thickness and is compactly arranged by parenchymatous cells. But it is interrupted by stomata. Tech and Engineering - Questions & Answers, Health and Medicine - Questions & Answers. Like the skin epidermis, epidermis of plants also consists of different types of cells that vary in morphology and serve different functions. Serving as a plant’s skin, epidermis cells protect internal tissues from the outside world by creating a barrier. But the epidermis also serves a variety of other functions for plants. A cuticle, made of cutin, is usually present on the outer wall of the cells. Stomata present in the epidermis allow gaseous exchange to occur during photosynthesis and respiration. {{courseNav.course.mDynamicIntFields.lessonCount}} lessons Role of epidermis in plants : 1. It is more prominent in the aerial part of desert plant. 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The epidermis of a plant is often overlooked, but it’s an important barrier between the elements and the other tissues. The epidermis acts as a barrier that protects the body from ultraviolet (UV) radiation, harmful chemicals, and pathogens such as bacteria, viruses, and fungi. They may also specialize to form a landing surface that is less slippery, providing an area that is more stable for pollinators to stand on. The epidermis is actually interrupted by small pores called stomata. Made up of epidermal cells, the epidermis in plants also serves as a protective layer that not only prevents various microorganisms from gaining entrance into the underlying tissue of leaves and stems, but also prevents excess water loss among a few other functions. Think of a cactus with its large spines. (iii) Cells of epidermis are water resistant thus prevent excess loss of water (iv) It is a protective tissue which protect the plant body (v) It allows exchange of gases through the stomata. Plant epidermis is unique because it is actually two different layers of cells: the upper epidermis and the lower epidermis. It consists of epidermis, stomata and epidermal outgrowths. What Is an Epidermis? Did you know… We have over 220 college On most plant stems and leaves, the epidermis is covered with a waxy coating called the cuticle, which helps prevent water loss through the epidermis. All rights reserved. Cuticle of epidermis also helps to reduce water loss by evaporation to prevent dessication. An error occurred trying to load this video. Prevention of mechanical injury and invasion by parasite fungi. The vascular tissue system provides water and nutrient transport from the roots to other parts of the plant. (v) It allows exchange of gases through the stomata. 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