Answered: What features distinguish sponges,…

What features distinguish sponges, cnidarians,protostomes, and deuterostomes? Place these features onthe phylogeny drawn for Self-Assessment question 1.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter15: Diversity Of Animals

Section: Chapter Questions

Problem 23CTQ: Compare the structural differences between Porifera and Cnidaria.

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Concept explainers

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.

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What features distinguish sponges, cnidarians,
protostomes, and deuterostomes? Place these features on
the phylogeny drawn for Self-Assessment question 1.

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Four of the five answers listed below are characteristics of cnidarians. Select the exception. O ciliated larvae O polyp form O jellylike matrix O nematocyst O pharynx
Construct a cladogram showing possible evolutionary relationships among: Cnidaria Porifera Ctenophora ●
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Briefly describe asconoid, syconoid, and leuconoid body types in sponges
Differentiate the three different body plans in sponges: Characteristics Asconoid Syconoid Leuconoid 1. Wall 2. Mesenchyme 3. Choanocytes 4. Spongocoel
compare cnidarians to sponges and to the clade containing flatworms, mollusks, and annelids. What features are similar among these groups? What features are different?
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