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Further Investigations: Phylum Arthropoda

  1. What is the difference between a simple eye in vertebrates and a compound eye in arthropods? Also compare the eyes of arthropods with those found in cephalopod molluscs.
  2. Many groups of animals have adopted worm-like body plans. Some appear streamlined such as roundworms (phylum Nematoda), flatworms (phylum Platyhelminthes), earthworms, and leeches (phylum Annelida, subclasses Oligochaeta and Hirudinea). In contrast, other groups use leg appendages along their worm-like bodies. Prepare a table listing worm-like invertebrates that use leg appendages, such as centipedes and caterpillars (phylum Arthropoda). List as many animal groups as possible. Compare their evolutionary relationships.

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Exploring Our Fluid Earth, a product of the Curriculum Research & Development Group (CRDG), College of Education. University of Hawaii, 2011. This document may be freely reproduced and distributed for non-profit educational purposes.