Xylem serves as a conduit for the movement of water, minerals and phytohormones through a plant. Xylem is a vascular tissue, though its form varies from plant to plant.Know More
Three types of cells compose a plant's xylem. The most important cells, called tracheary elements, are hollow structures that serve as the passageway for water and other small molecules. Tracheary elements occur in two different forms, tracheids and vessel elements. Though both types have some differences, their essential function is similar. Both are dead before the plant rotates them into use.
The other two types of xylem cells are the parenchyma cells and fiber cells. The essential purpose of both types is to provide structure and support for the tracheary elements. Additionally, they prevent the plant's weight from crushing the tracheary elements, which would halt the flow of water.
Xylem is the most abundant biological material on the planet. It is present in the stalks of plants and flowers and makes up the woody part of trees. Scientists suspect that xylem evolved around the time that plants began colonizing terrestrial habitats. Unlike ancient plants that evolved in aquatic or marine ecosystems, surrounded by water, terrestrial plants had to evolve to transport water throughout the plant's various structures.Learn more about Diagnostics & Imaging
Xylem is a type of vascular tissue that is responsible for moving water through a plant from its roots to its leaves. Columns of xylem tissue begin in the root hairs and rise all the way up through the leaves of a plant.Full Answer >
The main function of xylem cells is to carry water and soluble minerals from the root to the leaves of a plant. However, a secondary function of xylem tissue is to provide support for the plant. Xylem is present in vascular plants and is made up of different types cells, such as tracheids, fibers and parenchyma.Full Answer >
MRIs use radio waves to show pictures of the soft tissue sarcoma, explains American Cancer Society. The radio waves release energy in the body in a pattern depending on the shape of the tissue and the disease present. Computers turn the pattern into a comprehensive image of the sarcoma.Full Answer >
The function of a hospital is to provide surgical and medical care to the sick or disabled, according to Dictionary.com. About.com also notes that the role of a hospital is to deliver babies when needed on behalf of families. A hospital has more equipment, resources and space than a doctor's office when treating very ill patients and is able to accommodate patients for overnight stays.Full Answer >