ANCESTRAL PROTIST Metazoa Eumetazoa 770 million years ago 680 million years ago Bilateria 670 million years ago Porifera Ctenophora Cnidaria Acoela Deuterostomia Lophotrochozoa Hemichordata Echinodermata Chordata wwwwww Platyhelminthes Syndermata Ectoprocta Brachiopoda Ecdysozoa Mollusca Annelida Nematoda Arthropoda Which of the following statements is true based on the phylogenetic tree shown? Which of the following statements is true based on the phylogenetic tree shown? Sponges are basal animals. Bilaterians are polyphyletic. The Acoela are more closely related to echinoderms than to annelids. The animal kingdom is not monophyletic.

ANCESTRAL PROTIST Metazoa Eumetazoa 770 million years ago 680 million years ago Bilateria 670 million years ago Porifera Ctenophora Cnidaria Acoela Deuterostomia Lophotrochozoa Hemichordata Echinodermata Chordata wwwwww Platyhelminthes Syndermata Ectoprocta Brachiopoda Ecdysozoa Mollusca Annelida Nematoda Arthropoda Which of the following statements is true based on the phylogenetic tree shown? Which of the following statements is true based on the phylogenetic tree shown? Sponges are basal animals. Bilaterians are polyphyletic. The Acoela are more closely related to echinoderms than to annelids. The animal kingdom is not monophyletic.

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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The paraphyletic phylum Choanozoa contains chytrid zoospores and human sperm, among many other creatures. What are some important aspects of the group, in terms of its evolutionary significance?