Hypothesis 1: Porifera is a monophyletic group Porifera is the sister-group to Eumetazoa Hexactinellida is more closely related to Calcarea Demospongea is equally closely related to both Hexactinellida and Calcarea. Hypothesis 2: Porifera is a paraphyletic group Calcarea is more closely related to Eumetazoa than Demospongea or Hexactinellida Hexactinellida is sister-group to the clade formed by Calcarea and Eumetazoa Hexactinellida is more closely related to Calcarea and Eumetazoa than to Demospongea

Hypothesis 1: Porifera is a monophyletic group Porifera is the sister-group to Eumetazoa Hexactinellida is more closely related to Calcarea Demospongea is equally closely related to both Hexactinellida and Calcarea. Hypothesis 2: Porifera is a paraphyletic group Calcarea is more closely related to Eumetazoa than Demospongea or Hexactinellida Hexactinellida is sister-group to the clade formed by Calcarea and Eumetazoa Hexactinellida is more closely related to Calcarea and Eumetazoa than to Demospongea

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter27: Protists

Section: Chapter Questions

Problem 7TYK

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