Cacti have shallow spread roots but other plants have deep roots . Explain why?

You might think cacti would grow deep roots to search for a constant supply of groundwater. Instead, they often develop extensive, shallow root systems that sit just under the surface of the Earth and can extend several feet away from the plant, ready to absorb as much water as possible.

Explanation:

the answer is false?

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;