Lab #4 - differences. The phylum Mollusca refers to...

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Lab #4: Animal Diversity III- The Higher Invertebrates The purpose of the experiment is to understand biological classification by observing the distinction between different phyla. The taxonomy within a given phylum is also examined by looking at the difference of composition between species of the same phylum. In this experiment the higher invertebrates, which include the phylum Arthropoda, Molusca, and Echinodermata, are to be studied. They are all characterized by their possession of a true coelom. The phylum Arthropoda refer to a wide variety of animals, including all insects, spiders, and crustaceans. Most of these have heteronomous metamerism, as opposed to annelids, which are marked by metameric segmentation. In this experiment, shrimps, isopods, and decapods are going to placed under scrutiny for their differences in segmentation, tagmata, and structural
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Unformatted text preview: differences. The phylum Mollusca refers to soft-bodied creatures that possess hard shells of their own secretion. Though mollusks are close relatives to annelids and arthropods, they have a more compact form of body segmentation. The class Gastropoda, which include creatures with expanded, flattened foot, and the class Bivalvia, which include clams, are to be studied for the phylum. The phylum Echinodermata refers to a number of marine animals that are all characterized by a core-with-five-spokes body organization. It includes the class Asteroidea, which includes sea stars, the class Echinoidea, which includes sea urchins, and the class Ophiuroidea, which includes an assortment of suspension feeders. They are to be studied for their unique and individual characteristics....
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