Which feature is found in the common ancestor of the deuterostomes?
A.
B.
C.
D.
Correct. See Key Concept 32.1 Deuterostomes Include Echinoderms, Hemichordates, and Chordates
Incorrect. See Key Concept 32.1 Deuterostomes Include Echinoderms, Hemichordates, and Chordates
Animation 32.1 Quiz
Which pieces of information support the idea that sea stars, acorn worms, and humans can be classified as deuterostomes?
A.
B.
C.
D.
Correct. See Key Concept 32.1 Deuterostomes Include Echinoderms, Hemichordates, and Chordates
Incorrect. See Key Concept 32.1 Deuterostomes Include Echinoderms, Hemichordates, and Chordates
Animation 32.1 Quiz
A biologist discovers a new animal in a marine environment that has hexagonal radial symmetry. Of the following methods, which will best help him classify this organism with the deuterostomes or with some other group such as the ctenophores, sponges, or placozoans?
A.
B.
C.
D.
Correct. See Key Concept 32.1 Deuterostomes Include Echinoderms, Hemichordates, and Chordates
Incorrect. See Key Concept 32.1 Deuterostomes Include Echinoderms, Hemichordates, and Chordates
Animation 32.1 Quiz
Refer to the table below.
The table summarizes several physical characteristics of four different animals. A checkmark indicates the presence of a particular characteristic, while a blank indicates the absence of that characteristic. Which statement correctly classifies these animals?
A.
B.
C.
D.
Correct. See Key Concept 32.3 Chordates Have a Dorsal Nerve Cord and a Notochord
Incorrect. See Key Concept 32.3 Chordates Have a Dorsal Nerve Cord and a Notochord