'Vascular cavity' diaporamas de présentation

Chapter 33

Chapter 33. Invertebrates. Figure 33.1. Overview: Life Without a Backbone Invertebrates Are animals that lack a backbone Account for 95% of known animal species. Porifera. Cnidaria. Chordata. Echinodermata. Other bilaterians (including Nematoda, Arthropoda, Mollusca, and Annelida).

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Chapter 33

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Animal Body Systems

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Worms ( Lexy Bishop, Kellie Black, and Violet Lawson)

Worms ( Lexy Bishop, Kellie Black, and Violet Lawson). Flatworms, Roundworms, And Segmented worms. Flatworms. Phylum Name: Platyhelminthes Diversity: 20,000 species. General Characteristics of Flatworms. Bilaterally symmetrical Simplest animals- has three tissue layers

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