Which of the following makes up most of an old tree trunk?

Question

Quizplus · Accepted Answer

Secondary xylem makes up most of an old tree trunk. Also known as wood, it is produced by the vascular cambium and adds to the girth of the tree each year. Primary xylem and phloem are found in the growing tips of the tree and are eventually surrounded and replaced by the secondary growth. Secondary phloem is found outside of the vascular cambium and is responsible for transporting sugars and other organic compounds. Meristem tissue is found in the growing tips of the tree and is responsible for producing new cells for growth.

Which of the Following Makes Up Most of an Old