The epidermis helps keep plants from drying out, and it protects against predation, physical damage, and disease.Plus, get practice tests, quizzes, and personalized coaching to help you.
Leaves Function Of Plant Skin Is VeryBesides being large, your skin is very important because it protects everything underneath it from disease, temperature, and other physical damage that may occur.Much like your skin, a plant has a tissue system, a group of cells that work together for a very specific function, that form the first line of defense against physical damage and disease. This tissue system is called the dermal tissue system, and it is the plants outer protective coating. The dermal system itself consists of a layer of tightly packed cells called the epidermis. 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. Structure Plant epidermis is unique because it is actually two different layers of cells: the upper epidermis and the lower epidermis. Sandwiched in between these two layers are two other important tissue systems - the vascular tissue system and the ground tissue system. The vascular tissue system provides water and nutrient transport from the roots to other parts of the plant. The ground tissue system, also called the mesophyll, is specialized for photosynthesis, the process by which the plant converts sunlight into usable chemical energy. But if the epidermis covers the mesophyll, how does photosynthesis occur here The epidermis is actually interrupted by small pores called stomata. These openings allow the exchange of carbon dioxide and oxygen, which powers photosynthesis. Stomata are controlled by guard cells, which regulate the extent to which the stomata are open or closed. Function Serving as a plants 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. When stomata open to exchange gases during photosynthesis, water is also lost through these small openings by evaporation. Plants do not like losing water, and the waxy cuticle of the epidermis helps minimize this loss, keeping plants from drying out. The epidermis also helps protect plants from being eaten by animals and parasites. Many plants have thick hairs or spines that come from the epidermis, making it very unattractive to a hungry animal. The danger associated with trying to access whats behind those spines likely makes that plant very unappealing to you. Both the color and texture of epidermal cells can help attract and keep pollinators. Epidermal cells may enhance the scent and color of a plants flower petals, making them more attractive to pollinators. 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.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |