Stem Growth

How long do plants grow?

Primary Growth

Growth in length Roots always know to grow down

Specialized cells in root cap What about a topsy turvy planter?

Primary Growth

Stem Primary Growth

At the tips of nodes of a stem, there is a primary meristem.

Node: the area that holds the buds of two or more leaves, flowers, cones, roots, or other stems.

Stem Secondary Growth

Stem Secondary Growth

Secondary meristem is located in and around the vascular tissues.

Forms secondary vascular tissues and bark.

Tree Rings

What causes the color differences in tree rings?

Tree Rings

Tree Rings

The lighter color in a tree ring is known as earlywood.

It is produced early in the season.

What can the width of the rings tell you?

Primary and Secondary Growth

Tree Cookie Lab