Arrow "B" points to a structure that

Question

Quizplus · Accepted Answer

- A) is correct because the structure pointed to by "B" is the notochord, which is one of the four exclusive features of chordates.
- B) is correct because the notochord extends anteriorly into the head region in vertebrate embryos.
- C) is correct because the notochord provides support for muscle contraction.
- D) is correct because the notochord is replaced by the vertebral column in most adult vertebrates. Therefore, the best choice is E, because all of these statements are true.

Arrow "B" Points to a Structure That