Match the following. 1. That part of a woody stem, or tree, that is outside the vascular cambium bark 2. The maturation of a cell produced by a plant meristem differentiation 3. The first step after production by a meristem elongation 4. The youthful, undifferentiated cells of root and shoot tips wood 5. A plant that continues to grow year after year from the same plant body vascular cambium 6. The meristematic cells which produce new cells increasing plant body girth perennial 7. That part of a tree that is interior to the vascular cambium meristem