How can you know the age of the tree?

1.

How can you know the age
of the tree ?

2.

Internal
structure
of the
stem

3.

Stem structure:
Pith is the center of the stem. It stores
nutrients.
Xylem is vascular tissue made up of dead cells.
It transports water upward.
Cambium produces new xylem and phloem
cells. So tree grow in diameter
Phloem is vascular tissue made up of living cells.
It transport materials from leaves downward,
and also upward
Cork protects the plant from insects, animals,
damage

4.

5.

6.

Let’s do labwork on p.47

7.

Homework
Copy the PPT
Read p.46-47
New words
Fill in the labwork sheet on p.47