26-1 Introduction to the Animal Kingdom - Hamilton Local Schools
26-1 Introduction to the Animal Kingdom - Hamilton Local Schools
26-1 Introduction to the Animal Kingdom - Hamilton Local Schools
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<strong>26</strong>-1 <strong>Introduction</strong> <strong>to</strong> <strong>the</strong> <strong>Animal</strong><strong>Kingdom</strong>Trends in <strong>Animal</strong> EvolutionA deuteros<strong>to</strong>me is ananimal whose anus isformed from <strong>the</strong>blas<strong>to</strong>pore.The anus is <strong>the</strong> openingthrough which wastesleave <strong>the</strong> digestive tract.Ec<strong>to</strong>dermMesodermEndodermBlas<strong>to</strong>poreMouthCopyright Pearson Prentice HallBlas<strong>to</strong>pore becomes anusSlide19 of 49End Show
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