FA16_Student_Intro_to_Inverst Lab Sheet-1

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Northeastern University *

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1107

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Biology

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Apr 3, 2024

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docx

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Introduction to Invertebrates Lab Sheet Name _____________________________________________________ SECTION_____ TAs NAME________________________________________________ Chapter 23.1 Evolution of Animals Over the next labs you will learn about a variety of different animals. Throughout that time you will complete charts to observe the evolutionary relationships between all of these taxa. Use the information from today’s lab to complete the first chart below. Phylum Name Tissue Layers Body Cavity Symmetry Protostome or Deuterostome?
Chapter 23.2 Sponges Examine the preserved sponge cut in half. Locate the osculum and the central cavity. Draw and label them below. Examine a prepared slide of Grantia . Label the following: Magnification Central cavity osculum pore spicule (if visible)
Use a prepared slide of sponge spicules to draw them below: Name an example of each type of sponge that you observed in lab. Draw the specimen and write what type of spicules they have. Specimen Name_________________________________________ Spicule type_____________________ Specimen Name_________________________________________ Spicule type_____________________ Specimen Name_________________________________________ Spicule type_____________________ Chapter 23.3 Cnidarians Use a prepared Whole Mount (W.M) slide of Hydra to draw and label the following: Magnification
Tentacle Mouth Epidermis Basal Disk View a living hydra demo set up by your TA. Describe how the Hydra move. View a hydra feeding demo set up by your TA. Describe how a Hydra collects and ingests it’s food. View the preserved specimens of Cnidaria available. You should be able to identify these organisms to the level of Genus. Draw and label them below.
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