How can we help?

You can also find more resources in our Help Center.

Woody Plants

STUDY
PLAY
wood is actually
xylem cells
heartwood
older xylem near the center of the stem that no longer conducts water
heartwood is surrounded by
sapwood
light ring
early in the year
dark ring
later in the year
combo of rings =
tree rings
bark (made of)
cork and phloem cells