284 TISSUES 



3. Collenchymatous tissue. 



4. Soft bast or phloem (sieve tissue). 



5. Prosenchymatous tissue. 



a. Fibrous tissue or bast fibers. 

 6. Wood tissue or wood fibers. 



c, Tracheids. 



d. Vascular tissue or ducts. 



6. Sclerenchymatous or sclerotic tissue. 



7. Laticiferous tissue. 



8. Tissue systems. 



REVIEW. What is a tissue? How may two tissues differ? What, 

 is parenchymatous tissue? Name three places where this is found. 

 Distinguish between meristematic and permanent tissue. Name two 

 uses of parenchymatous tissue. Of what utility are the intercellular 

 spaces of leaves? Describe the parts studied in the section of root 

 tip. What part of this tip will become vascular? Describe epidermal 

 tissue. Collenchyma. Sieve tissue. Of what use are the sieve areas? 

 What are the chief uses of prosenchyma? Describe fibrous tissue, 

 wood cells or wood fibers; tracheids; ducts. What does your experi- 

 ment in blowing air through a grape-vine stem indicate? Describe 

 cells of sclerotic tissue. Laticiferous tissue. Name three tissue systems. 

 What are nbro-vascular bundles? What two classes of tissue are found 

 in each bundle? Of what is phloem composed? Xylem? 



