Biology Forums - Study Force

the illustration above to answer questions 1619.
  E 16. Which structure is a dorsal,hollow nerve tube?
  a. A
  b. B
  c. C
  d. A and B
  e. none of these

Question 2

Which of the following is NOT true about hagfishes?
  a. They are jawless chordates with some
  resemblances to lancelets and some to
  vertebrates.
  b. They possess a partial cartilaginous cranium.
  c. They are known only from the fossil record.
  d. When threatened they secrete copious amounts
  of mucus.
  e. They lack jaws.

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Such an awesome helper!