The flexible,longitudinal rod that is located between the digestive tract and the nerve cord in chordates is called the
A) notochord.
B) dorsal,hollow nerve cord.
C) spinal cord.
D) spine.
Correct Answer:
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Q4: are soil- dwellers; _ are mostly marine;
Q5: Which of the following statements about deuterostomes
Q6: Which of the following statements about tunicates
Q7: A bilaterally symmetrical,wormlike animal that has a
Q8: According to the "new" revised phylogeny based
Q10: Which of the following are not included
Q11: Animals probably evolved from
A)fungi.
B)plants.
C)bacteria.
D)protists.
Q12: Which of the following groups has a
Q13: According to recent genetic research,the complexity of
Q14: Which of the following animals displays radial
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