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In the sub-phylum (i) notochord is prese...

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.

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

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

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

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 which subphylum notochord is replaced by vertebral column?

In which subphylum notochord is replaced by vertebral column?

In which of the following animal the notochord is replaced by bony vertebral column in the adult ?

In which of the following animal the notochord is replaced by bony vertebral column in the adult ?