features that suggest the Cnidaria and Ctenophora share. Outline the features that distinguish these two phyla. Be sure to discuss (at a minimum) the nervous system, muscle tissue, and cells used for prey capture. Discuss which of these may be convergent adaptations for a pelagic lifestyle.

Q: Review the extent of segmentation in Polychaetes, Leeches, Siboglinids, Echicrans, and Sipunculans.

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Q: Which of the following is the correct classification for the following invertebrate animal: These…

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Q: Create a body plan table (Insert → Add Table) for the following animal phyla: Porifera, Cnidaria,…

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Q: Which of the following is the correct classification for the following invertebrate animal: A…

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Q: for the species : wood pecker  provide the following information: 1. Species name/common name…

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Q: What is the primary characteristic of the Ecdysozoa (Nematoda + Arthopoda)?

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Q: Briefly describe: A. cnidarian adaptations that illustrate their major evolutionary advancements…

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Q: Reptilia, aves and Chordata share major similarities, list at least 6 of them.

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Animal Phylogeny

Cladistics is a method of biological classification where organisms are classified based on their ancestors and their relationship with them. It is defined as the concepts and methods for determining the branching patterns of evolution and evolutionary history. Some scientists, however, have preferred the term phylogenetic systematics or phylogenetic taxonomy to emphasize the reliance on a phylogeny for classification. It is the most common and accepted method for classifying organisms.