A notochord is A a stiff ventral supporting rod. B All of the choices are correct. C replaced by the nerve cord during development. D a stiff dorsal supporting rod that is replaced by the vertebral column during development. E a strip of cartilage that forms a back and tail in all vertebrates.
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It is not replaced by the nerve cord during development, so the second option is incorrect. It is a stiff dorsal supporting rod that is replaced by the vertebral column during development, so the third option is correct. The last option is not accurate, as it is Show more…
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Which of the following statements about the notochord is $f$ alse? a. The notochord forms from mesoderm. b. The notochord is part of the nervous system. c. The notochord provides rigidity and defines the long axis of the embryo. d. The vertebral column replaces the notochord, which degenerates, leaving remnants in intervertebral disks.
Select the incorrect statement from the following: (a) In vertebrates, the notochord is replaced by cartilaginous or bony vertebral column. (b) In cephalochordates, the notochord is extended from head to tail region and is persistent throughout life. (c) Protochordates are exclusively marine. (d) Notochord is present in tail of adult in urochordata.
A tunicate, a member of phylum Chordata, _______. Group of answer choices has a notochord has a nerve chord along its midline is segmented all of the above A and B
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