Nr. 31

Marine Algae (N-31)


The requirements for the Marine Algae honor are as follows:


  1. What is marine algae?


  2. Where is it found?


  3. What is the organ of attachment to the substratum called? How does it differ from a true root?


  4. How does size vary in marine algae?


  5. Name the four groups of marine algae, indicating opposite the name of each group whether it is unicellular, multicellular, or both.


  6. Is most green algae found in fresh or salt water?


  7. What are diatoms?


  8. Where does algae grow best - in the polar, temperate, or tropic zone?


  9. Where is brown algae most invariably found - in fresh or salt water?


  10. What is the greatest depth that algae grows in the ocean? Why can it not grow in deeper water?


  11. Name the three parts of a large kelp. How do they compare to the leaf, stem, and root of a plant?


  12. Describe the two ways that algae reproduce.


  13. What are some of the commercial values of algae? Give at least one for each group.


  14. Make a collection of at least twenty specimens of marine algae properly identified, mounted, and labeled. There must be at least four specimens from the Green group, eight from the Brown group, and eight from the Red group.


  15. Be able to identify by generic name at least ten types of marine algae.


  • Marine Algae of the Monterey Peninsula, Gilbert M. Smith, Stanford University Press, Stanford, CA 94305.
  • Botany, an Introduction to Plant Biology, T. Elliot Weier, Stocking and Barbour
  • Intertidal Invertebrates of the Central California Coast, by S. F. Light, University of California Press, 2223 Fulton St., Berkeley, CA 94720.
  • Field Book of Natural History, E. Laurence Palmer, McGraw-Hill Book Co., 330 West 42nd St., New York, NY 10036.
Skill Level 3