Multiple Choice
A notochord is most correctly defined as
A) a primitive spine.
B) the tissue that becomes the dorsal nerve.
C) a flexible stiffening rod extending the length of the body.
D) embryonic tissue that develops into bone and cartilage.
E) any tissue that functions in the role of a dorsal tubular nerve cord.
Correct Answer:
Verified
Correct Answer:
Verified
Q28: "Sea squirts," the most common kind of
Q29: Lancelets belong to the subphylum _.
Q30: Explain why fossil specimens of Haikouella lanceolata
Q31: The development of a new vertebrate head
Q32: Although several invertebrate groups have been proposed
Q34: Appendicularians<br>A)are sexually mature individuals that have retained
Q35: While several invertebrate groups (phyla)have in the
Q36: Pikaia gracilens,the earliest known chordate collected from
Q37: Outline the process that may explain how
Q38: The skeletal rod found in all chordates