Circulation developed due to which of the following?
A) Animals got larger.
B) Segmentation allows increasing specialization of body parts.
C) The development of a complete digestive tract allows the specialization of regions to carry out a variety of functions.
D) Circulatory systems allow more efficient transfer of materials and gave an advantage to the animals that developed them.
E) None of these are true.
Correct Answer:
Verified
Q2: All animals are
A) multicellular, heterotrophic, and diploid.
B)
Q7: Which of the following allows materials to
Q8: Which of the following are most closely
Q10: Choanoflagellates
A)have flagellated collar cells.
B)may be free-living or
Q11: Which of the following is true of
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