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FPU 131: Wood Structure and Identification

Take-Home Exercises 13. Layers of the cell wall

Instruction: Define and distinguish the term between each other, and briefly explain its relation
and importance in wood identification.

1. Primary cell wall?

a. _____________________

b. _____________________

c. _____________________

d. _____________________

2. Secondary inner cell wall?

a. _____________________

b. _____________________

c. _____________________

3. Secondary middle cell wall?

a. ______________________

b. ______________________

c. ______________________

d. ______________________

4. Secondary outer cell wall?

a. ________________________

b. ________________________

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