Cnidarians do not have mesoderm. Discuss the costs and benefits of this condition, especially with regards to their movement and metabolism. Is this condition ancestral or derived? Explain how your answer depends on the phylogenetic position of ctenophores.

Cnidarians do not have mesoderm. Discuss the costs and benefits of this condition, especially with regards to their movement and metabolism. Is this condition ancestral or derived? Explain how your answer depends on the phylogenetic position of ctenophores.

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter29: Vertebrates

Section: Chapter Questions

Problem 8RQ: Members of Chondrichfhyes are thought to be descended from fishes that had. a cartilaginous skeleton...

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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.

Question

Chemical pathways by which living things function, especially those that provide cellular energy, such as the transformation of energy from food into the energy of ATP. Metabolism also focuses on chemical pathways involving the synthesis of new biomolecules and the elimination of waste.

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