Plant Tissue Layer Between Xylem and Phloem

This page is the CodyCross answer for the clue below from Inside the Spaceship, Group 1183, Puzzle 2 (Ancient Times).

Question is: Plant Tissue Layer Between Xylem and Phloem

and the answer is: CAMBIUM

Word Meaning:

CAMBIUM — (botany) A layer of cells between the xylem and the phloem that is responsible for the secondary growth of roots and stems.

Definitions from Wiktionary.