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Author Question: What is the most effective anti-drag body plan? a. Torpedolike b. Horizontally compressed c. ... (Read 37 times)

karen

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on: Aug 22, 2018

What is the most effective anti-drag body plan?
  a. Torpedolike
  b. Horizontally compressed
  c. Vertically compressed
  d. Disk-shaped



Question 2

What is considered the most primitive true animal?
  a. Porifera
  b. Cnidaria
  c. Annelida
  d. Mollusca



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alexisweber49

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Reply #1 on: Aug 22, 2018
Answer to Question 1

ANS: A
Drag is the resistance to movement and is determined by the frontal area, body contour, and surface
texture. It increases geometrically with increasing speed. Information can be found in the section
Fishes Are Successful Because of Unique Adaptations.



Answer to Question 2

ANS: A
Sponges, in the phylum Porifera, are the most primitive. They are all suspension feeders that are found
in all latitudes. Information can be found in the section Invertebrates Are the Most Successful and
Abundant Animals



karen

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Reply 2 on: Aug 22, 2018
Gracias!

laurnthompson

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Reply 3 on: Yesterday
Excellent

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