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Survey of Marine Invertebrates, Part 2

Do the following lab activity, "Survey of Marine Invertebrates, Part 2." The instructions for this lab are below, and this lab must be done in the Biology Learning Center. There are worksheets for this activity in your worksheet packet. When you have completed each step of the activity, take the results to the front desk inthe Biology Learning Center for lab points.


Equipment and Supplies:
  • You will observe some of the organisms in the salt water tank in the Biology Learning Center. We also periodically have a small saltwater tank set up, with different critters in it (we rotate different critters in and out of it)—So check out that tank, too!
  • Refer to Chapter 7 (especially Table 7.1) in your textbook as well as your textbook worksheets to fill out your lab worksheets for the "Survey of Marine Invertebrates, Part 1" lab activity.

This lab is a continuation of the lab you started in Unit 4; the one where you observed 3 organisms in the saltwater aquarium.

Just like in Unit 4, your lab activity today is to observe the organisms in the tank and to pick out THREE organisms that belong to the phyla and classes that you are studying as part of Unit 5. Each of the three organisms must belong to a different phylum or class.

  • Phylum Arthropoda
    • Subphylum Crustacea
  • Phylum Ectoprocta
  • Phylum Echinodermata
    • Class Asteroidea
    • Class Ophiuroidea
    • Class Echinoidea
    • Class Holothuroidea
  • Phylum Chordata
    • Subphylum Urochordata

You may not be able to find examples of organisms from each of the phyla listed above. Some of them might be too small for you to see; others may be voracious predators that would eat everything in the tank! Still others may be planktonic and therefore not well suited for life in a 75-gallon tank.

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