What are the vessels through which organic substances move?

Higher plants have a complex structure of their organism. There are various organs and tissues that perform specific functions in the body. There is a conductive tissue for the transport of various substances. For water and minerals, these are dead conductive cells called vessels. Organic matter is transported through the sieve tubes. These are already living conducting cells. Both are elongated and lack various organelles, including nuclei, in order to better perform their functions.