Lecture # 12

NOTE: This lecture will be used for the Plant Tissue
Lab.  Print it out and bring it to lab with you.

The concept of tissue is the same for plants as for
animals: a group of similarly specialized cells
that together perform certain special functions.

The major source of specialization for plant
cells is the cell wall.

Meristematic Tissue

Apical meristems
Lateral meristem

1. Protective Tissues  

A. Epidermis with cutin
B. Cork with suberin

Stomata on leaves
Root hairs on roots

2. Fundamental Tissues or Ground Tissues  

A. Parenchyma
B. Chlorenchyma

3. Supportive Tissues

A. collenchyma
B. sclerenchyma
C. bast fibers
D. sclereids

4. Conductive Tissue or Vascular Tissue  

A. Xylem 

Tracheids
Vessel elements

The transpiration stream

Complex plant tissue

Simple plant tissue

B. Phloem

Sieve tube elements
Companion cells  

The translocation stream

5. Reproductive tissues

A. pollen
B. ovules