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Lab# 2 - lack of mouth digestive tract and nervous system...

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Lab #2: Animal Diversity I- Biological Classification 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 phylum Porifera and Cnidaria are going to be examined, and certain emphasis are given to their characteristic features. The phylum Porifera, which refer to sponges, contains the taxonomic classes Asconoid, Syconoid, and Leuconoid. They are all similar in their simplistic cellular composition and their
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Unformatted text preview: lack of mouth, digestive tract, and nervous system. Their body composition and skeleton are going to be studied in this experiment. The phylum Cnidariam, which refer to stinging animals, contains the taxonomy of two Hydrozoans: Hydra and Obelia . Cnidarians are diploblastic (composed of two cell layers), and are composed of merely eight cell types. The class Hydra is distinguished by its lack of medusa stage, while Obelia contains both the reproductive medusa stage and the polyp stage. The feeding, digestion, circulation, and skeleton are going to be studied in this experiment....
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