In vertebrates,the _______ is/are usually replaced by ________.
A) pharyngeal pouches; gill arches
B) dorsal hollow nerve cord; a ventral solid nerve cord
C) gill arches; pharyngeal pouches
D) notochord; a dorsal hollow nerve cord
E) notochord; a vertebral column
Correct Answer:
Verified
Q8: Defining characteristics of chordates are
A) segmentation, dorsal
Q15: Which of the following sequences correctly
Q17: The cartilaginous fishes include all EXCEPT
A)lampreys.
B)dogfish shark.
C)skates.
D)rays.
E)whale
Q18: Amphibians are NOT considered to be fully
Q19: Sharks
A)have bone skeletons.
B)lack jaws.
C)have a keen sense
Q21: Which of these is a proper contrast
Q22: The duckbill platypus is an exception to
Q23: Which of these characteristics is NOT associated
Q24: Which of these characteristics is NOT found
Q25: Which of the following features is NOT
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