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Invertebrate Tissue Development and Evolution

Explore the primary tissues in animal evolution - ectoderm, endoderm, and mesoderm. Learn how mesoderm influences muscles and organ formation. Understand the differences between radial and bilateral animals.

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Invertebrate Tissue Development and Evolution

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  1. Lecture 5Animal Evolution – The Invertebrates

  2. Primary Tissues • Ectoderm; lines the body surface • Endoderm; layers the inner gut lining • Mesoderm; forms in between these two, sources of muscles, forms many organs. • Radial animals have all the tissues except mesoderm • Bilateral animals have all three tissues

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