1. which of the following allows a plant's vascular system to work as a transport system?
A. a plant's vascular system is made up of specialized cells that move around the plants as it grows.
B. a plant's vascular system is made up of specialized cells that are covered in a thick cell wall.
C. a plant's vascular system is made up of specialized cells that form straw-like tubes.
D. a plant's vascular system is made up of specialized cells that divide as the plant grows.