Porifera (sponges) Choanocytes! What do these cells do? Where are these creatures typically found? Spicules. What are these. How do they differ between the different classifications of sponges? What does it mean to be the basal group of Animalia?

Porifera (sponges) Choanocytes! What do these cells do? Where are these creatures typically found? Spicules. What are these. How do they differ between the different classifications of sponges? What does it mean to be the basal group of Animalia?

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

Porifera (sponges)
Choanocytes! What do these cells do?
Where are these creatures typically found?
Spicules. What are these. How do they differ between the
different classifications of sponges?
What does it mean to be the basal group of Animalia?

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