Sponges A Cnidarians tral nial ist Flatworms Molluscs Annelids Nematodes

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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Sponges
A
Cnidarians
Ancestral
colonial
Flatworms
protist
Molluscs
В
Annelids
Nematodes
E
Arthropods
C
Echinoderms
D
Chordates
Where on the tree did an internal skeleton evolve?
B.
Transcribed Image Text:Sponges A Cnidarians Ancestral colonial Flatworms protist Molluscs В Annelids Nematodes E Arthropods C Echinoderms D Chordates Where on the tree did an internal skeleton evolve? B.
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