- - AGRICULTURE CORE CURRICULUM - -

(CLF6000) Advanced Core Cluster: ORNAMENTAL HORTICULTURE

 (CLF6100) Unit Title: PHOTOSYNTHESIS AND RESPIRATION

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 (CLF6199) Topic: PHOTOSYNTHESIS AND RESPIRATION  Time      Year(s) 
                    UNIT EXAM                       1 hour      3 / 4 
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TOPIC PRESENTATION: PHOTOSYNTHESIS AND RESPIRATION UNIT EXAM


NAME _____________________________________

DATE ________________

PER. ________________


        Photosynthesis, Respiration and Cellular Function: Unit Exam


COMPLETION: Complete the phrases below with the appropriate word or words.

 1. As temperature rises, the rate of photosynthesis _____________________.

 2. Plants accomplish gaseous exchange through structures on the leaves

    called _______________________________.

 3. Lamellar membranes are found within the _____________________________.

 4. In the ______________________ reaction, light energy is absorbed by

    pigments. In the _______________________ reaction, energy is stored

    by the formation of glucose (sugar) from carbon dioxide.

 5. Geotropic response, active transport, and cell division all require

    __________________________ from the process of respiration.

 6. In combustion energy is released _______________________. In contrast,

    respiration releases energy _________________________.

 7. _________________________________ and ________________________ are two

    possible sources of food energy for the respiration process.

 8. As indoor plants receive less light, they need less ___________________.

 9. Guard cells and root hair cells are special kinds of___________________

    tissue.

10. Soil compaction and soggy soil inhibit _________________________ in 

    the roots of plants. These should be avoided in landscape maintenance.

11. Seeds should be stored at _________________ temperatures.

12. Increasing the level of CO2 in a greenhouse will ____________________

    the rate of growth of plants.

13. Two locations of meristem in the plant are __________________________

    and __________________________________.

14. Cells make up tissues. Tissues, in turn, combine to make up

     __________________________.

15. In order to improve gas exchange around the roots, clay soils and 

    soils to be used in containers should be _________________________.


SHORT ANSWER/ESSAY: Answer the following questions as concisely as possible in the 
space provided.

16. a. Write the balanced equation for photosynthesis.







    b. Write the balanced equation for respiration in plants.







17. Compare meristematic tissue with permanent tissue. Include in your
    answer the main difference between the two and an example of where 
    each can be found in the plant.









18. Tell in words how plants acquire energy. Include, for extra credit,
    what role the light and dark reactions play in this acquisition.











19. What is the general function of epidermal cells?











20. What is the function of cells in the cambium tissue of plants?











21. Explain in your own words how energy is released in plants. Include in 
    your discussion what plants use energy for. 







22. By completing the table below, tell how photosynthesis differs from 
    respiration with regard to the factor listed on the left.


                         PHOTOSYNTHESIS                 RESPIRATION
===========================================================================
                |                              |
Chemical Energy |                              |
                |                              |
___________________________________________________________________________
                |                              |
Carbon Dioxide  |                              |
                |                              |
___________________________________________________________________________
                |                              |
Oxygen          |                              |
                |                              |
___________________________________________________________________________
                |                              |
Sugar           |                              |
                |                              |
___________________________________________________________________________
                |                              |
Where           |                              |
                |                              |
___________________________________________________________________________
                |                              |
When            |                              |
                |                              |
___________________________________________________________________________


23. Give one similarity and one difference between the function of xylem 
    cells and the function of phloem cells.











24. List below the requirements of photosynthesis, and tell what role
    each plays in the process.










25. Photosynthesis has a primary product and a by-product. Name each, and
    give the notation for its chemical name.





26. How would you handle cut flowers to increase their vase life? Relate
    as part of your answer how plant respiration must be considered in
    handling cut flowers.








27. Describe three plant adaptations which provide for efficient
    photosynthesis.








28 Describe two environmental conditions which might lead to a reduced
   respiration rate in a plant.






29. Explain how night temperatures affect plant growth. In your
    explanation, describe what happens if night temperatures are too high
    and what happens if they are too low. Be sure to show how this is 
    related to plant respiration.








30. Describe three different factors which can influence the way a cell
    differentiates.




12/14/90 MH/sg
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