Google is your friend. You should use it for questions like this one.
https://www.google.com/search?q=What+is+a+transport+system+in+plants&oq=What+is+a+transport+system+in+plants&aqs=chrome..69i57j69i60.780j0j7&sourceid=chrome&ie=UTF-8
What is a transport system in plants
1 answer