Which one of the following structures is pres | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) In all adult vertebrates,the notochord is replaced by a bony or cartilaginous vertebral column.In adult vertebrates,the dorsal tubular nerve cord

Vedclass · Accepted Answer

Dorsal tubular nerve cord

Vedclass · Answer

(B) In all adult vertebrates,the notochord is replaced by a bony or cartilaginous vertebral column.In adult vertebrates,the dorsal tubular nerve cord is modified into the central nervous system (brain and spinal cord).Pharyngeal gill slits are present during the embryonic stage in all vertebrates,but they typically disappear in terrestrial adults. While they persist in some fishes and amphibians,they are not universal in all adult vertebrates.However,all vertebrates possess a central nervous system derived from the dorsal tubular nerve cord,making it the most fundamental structure shared among them,though the question implies a structural feature common to the phylum Chordata that persists in the adult form. Given the standard interpretation of chordate characteristics,the dorsal tubular nerve cord (as the $CNS$) is the correct anatomical feature present in all adult vertebrates.

Which one of the following structures is present in all adult vertebrates?

Similar Questions

Which of the following is $NOT$ a subphylum of Phylum $Chordata$?

In some chordates,the notochord is replaced by the vertebral column. Such animals are called vertebrates. Which one of the following statements is correct?

Assertion $A$: $Amphioxus$ is not a vertebrate.
Reason $R$: $Amphioxus$ is not a chordate.
Which option is correct for Assertion $A$ and Reason $R$?

Differentiate between Non-Chordata and Chordata.

$A$ common characteristic of all vertebrates is $..........$

Vedclass Test Series

Exam Paper Generator

Online Exam Module