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Invertebrate Evolution: Fascinating World of Sponges

Explore the diverse world of sponges, the first animals on Earth. From simple structures to varied shapes, they host a range of small creatures and thrive in freshwater and coastal areas. Discover their unique characteristics and importance in marine ecosystems.

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Invertebrate Evolution: Fascinating World of Sponges

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  1. Lecture 5Animal Evolution – The Invertebrates

  2. 1. Sponges-success in simplicity • No symmetry, tissues/organs • Abundant from the early earth. • Inhabitants of freshwater/coastal regions. • Sizes vary from very large to tiny ones • Home to worms, shrimps & many small animals. • Several shapes-flattened, sprawling, lobed, compact, tubelike, vaselike. • Filter feeders

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