Final answer:
Xylem and phloem are two types of vascular tissues crucial for water and nutrient transport in vascular plants. Xylem carries water and is comprised of tracheids and vessel elements, while phloem transports organic compounds using cells like sieve tubes and companion cells. Both are found together in vascular bundles within plant stems and leaves.
Step-by-step explanation:
Xylem is a type of vascular tissue in vascular plants that is responsible for the long-distance transport of water and nutrients from the roots to the rest of the plant. It consists of several types of cells, including xylem parenchyma, tracheids, and vessel elements. Tracheids and vessel elements are specialized xylem cells that conduct water and are dead at maturity. Tracheids have thick secondary cell walls that are lignified, allowing water to move through pits in their walls. Vessel elements have thinner walls and are connected to one another by perforation plates, through which water flows.