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Tegab Tegab
wrote...
Posts: 509
Rep: 0 0
6 years ago
Which structure is not a major diagnostic feature of the chordates?
 
 a. dorsal hollow nerve cord.
  b. notochord.
  c. pharyngeal gill slits.
  d. vertebral column.

Question 2

The dermal endoskeleton of echinoderms is made of
 
 a. cartilage.
  b. bone.
  c. calcium carbonate.
  d. chitin.
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hk7
wrote...
6 years ago
Answer to q. 1

d

Answer to q. 2

a
Tegab Author
wrote...
6 years ago
What an awesome place to get free homework help
hk7
wrote...
6 years ago
What makes it awesome is that you posted, thanks for trusting us
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