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Author Question: What is considered the most advanced animal phyla? a. Chordata b. Echinodermata c. Mollusca d. ... (Read 77 times)

hubes95

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on: Aug 22, 2018

What is considered the most advanced animal phyla?
  a. Chordata
  b. Echinodermata
  c. Mollusca
  d. Arthropoda



Question 2

What class is comprised of nautiluses, octopuses, and squid?
  a. Cephalopoda
  b. Bivalia
  c. Gastropoda
  d. Mollusca



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coyin

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

ANS: A
Chordata is the most advanced phylum. The animals in this phylum have a rigid notochord, hallow
dorsal nerve system, and gill slits at some point in their development. Information can be found in the
section Construction of Complex Chordate Bodies Begins on a Stiffening Scaffold



Answer to Question 2

ANS: A
These animals and cuttlefish are cephalopods. They are so named due to their head being surrounded
by a foot that has divided into tentacles. Cephalopods are in the phylum Mollusca. Information can be
found in the section Advanced Invertebrates Have Complex Bodies and Internal Systems



hubes95

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Reply 2 on: Aug 22, 2018
Great answer, keep it coming :)

cici

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Reply 3 on: Yesterday
Gracias!

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