Concepts of Biology (BIOL116) - Dr. S.G. Saupe; Biology Department, College of St. Benedict/St. John's University, Collegeville, MN 56321; ssaupe@csbsju.edu; http://www.employees.csbsju.edu/ssaupe/

Test Yourself:  Plant Structure & Seed Germination

 1.  Identify the correct sequence of events during seed germination and early growth.  The first one is done for you:

2. What's the difference between a leaf and a cotyledon?
   
   

3. How can you tell is a seed is dormant, quiescent or dead?
   
   

4. What is the difference between germination rate and germination percentage?
   
   
5. A packet of tomato seeds is labeled that it has 80% germination.  If you want 25 tomato plants to grow in your garden, how many seeds should you plant?
   
   
6. Assume you plant 20 lettuce seeds in your garden but after two weeks only 10 seedlings appear in your garden.  What is the germination percentage for these seeds?  Suggest reasons why the other 10 seeds failed to germinate.
   
   

7. What is a bud?
   
   

8. Which type of cells do you like to eat � collencyma, parenchyma or sclerenchyma � and why?
   
   

9. Identify the two strategies used by germinating seeds to avoid damaging the growing areas as it pushes through the soil.
   
   

10. What is the difference between a  root hair and root branch?  
    
    

11. Identify the "Function" for each of the following leaf structures:  cuticle, epidermis, guard cells and stomata, palisade layer, mesophyll layer, vein, xylem, phloem
    
    

12. Circle all of the terms that apply to the following species:

• Tomato plant:  herb shrub tree vine herbaceous woody annual biennial perennial deciduous evergreen

• Dandelion:   herb shrub tree vine herbaceous woody annual biennial perennial deciduous evergreen

• White oak tree:   herb shrub tree vine herbaceous woody annual biennial perennial deciduous evergreen

• Grape:  herb shrub tree vine herbaceous woody annual biennial perennial deciduous evergreen

• Scotch pine tree:   herb shrub tree vine herbaceous woody annual biennial perennial deciduous evergreen