Sponges No true tissues Cnidarians Radial symmetry Ancestral protist Molluscs Figure 17.6 An overview of animal phylogeny. Only 9 of the more than 30 animal Flatworms Tissues Annelids phyla (the exact number is not agreed upon) are included in the tree and in the text. The branching takes into account the Roundworms body plan, embryonic development, and genetic relationships of the organisms. Arthropods Bilateral symmetry Echinoderms Chordates

Sponges No true tissues Cnidarians Radial symmetry Ancestral protist Molluscs Figure 17.6 An overview of animal phylogeny. Only 9 of the more than 30 animal Flatworms Tissues Annelids phyla (the exact number is not agreed upon) are included in the tree and in the text. The branching takes into account the Roundworms body plan, embryonic development, and genetic relationships of the organisms. Arthropods Bilateral symmetry Echinoderms Chordates

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter1: Introduction To Physiology And Homeostasis

Section: Chapter Questions

Problem 5RE: Cells in a multicellular organism have specialized to such an extent that they have little in common...

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