Download Secondary Growth Lab

Name:_____________________
Secondary Growth Lab
1. Tilia Stem (3 year old stem)
2. Carrot
3. Heartwood and Sapwood
4. Annual Ring
___________Take your lab write-up to the lab and have the instructor initial if your pictures are correct and labeled
correctly.
Answer the following questions
Secondary Phloem is a ______________(tissue or cell) type. What are three cell types that are commonly found in
secondary phloem?
1.
2.
3.
Secondary Xylem is a ______________(tissue or cell) type. What are three cell types that are commonly found in
secondary xylem?
1.
2.
3.
Cortex and Pith are ______________(tissue or cell) type. What are three cell types that are commonly found in
cortex and pith?
1.
2.
3.
Why didn’t we examine a monocot stem for secondary growth?
What six tissues are found in bark? (Hint: three are part of the periderm.)
1.
2.
3.
4.
5.
6.
Besides secondary xylem, what is heartwood? What is sapwood?
Why when you remove the cork from a tree it can still live but when you remove the bark it will die?
Refer to the picture on the “Annual Ring Web Page” Is red oak ring porous or diffuse porous? Why?
Refer to the picture on the “Annual Ring Web Page” What is early wood and late wood? Why are they different?
Refer to the picture on the “Annual Ring Web Page” Is red oak a flowering plant or a conifer? How can you tell? Is
it a hardwood or softwood? Why?