In which sub-phylum Notochord extends from head to tail region and persistent throughout their life?

In which subphylum notochord extends from head to tail and persistent throughout the life?

In which subphylum notochord extends from head to tail and persistent throughout the life?

In the sub-phylum (_i_) notochord is present only in the larval tail, while in (_ii_), it extends from head to tail region and is persistent throughout their life. In (_iii_) class of vertebrate notochord is replaced by certilaginous vertebral column and (_iv_) class of vertebrate the notochord is replaced by bony vertebral column. select the option which is correct for all (i)-(iv) blanks.

In the sub-phylum (_i_) notochord is present only in the larval tail, while in (_ii_), it extends from head to tail region and is persistent throughout their life. In (_iii_) class of vertebrate notochord is replaced by certilaginous vertebral column and (_iv_) class of vertebrate the notochord is replaced by bony vertebral column. select the option which is correct for all (i)-(iv) blanks.

Tail is persistent throughout life in

Tail is persistent throughout life in

Notochord persists throughout the life in

Read the following statement and select the correct option : (a) In lancelets notochord extends from head to tail region and is througout their life . (b) In tunicates ,notochord is present only in the larval tail .

Read the following statement and select the correct option : (a) In lancelets notochord extends from head to tail region and is througout their life . (b) In tunicates ,notochord is present only in the larval tail .