Stem Growth

1
Stem Growth

• How long do plants grow?

2
Primary Growth

• Growth in length
• Roots always know to grow down
• Specialized cells in root cap
• What about a topsy turvy planter?

3
Primary Growth
4
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.

5
Stem Secondary Growth
6
Stem Secondary Growth

• Secondary meristem is located in and around the
  vascular tissues.
• Forms secondary vascular tissues and bark.

7
Tree Rings

• What causes the color differences in tree rings?

8
Tree Rings
9
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?

10
(No Transcript)
11
(No Transcript)
12
Primary and Secondary Growth
13
Tree Cookie Lab