Which is a characteristic of the phylum Chordata?
A) They do not have true tissues.
B) They have a gastrula with only two germ layers.
C) They have radial symmetry.
D) They have a notochorD.
E) They have a pseudocoelom.
Correct Answer:
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Q42: What was most key in the transition
Q43: Which is a characteristic of reptiles?
A) They
Q44: The function of vertebrae is to
A) protect
Q46: An animal that maintains its body temperature
Q47: Which is an amphibian?
A)turtle
B)lizard
C)toad
D)octopus
E)coelacanth
Q53: A tunicate is a(an)
A)invertebrate chordate.
B)vertebrate.
C)echinoderm.
D)amphibian.
E)fish.
Q54: Sea cucumbers and sea urchins belong to
Q55: A bony or cartilaginous structure that surrounds
Q56: Which is not a reptile?
A)bat
B)snake
C)crocodile
D)turtle
E)penguin
Q57: Birds are classified as
A) reptiles.
B) mammals.
C) amphibians.
D)
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