what is
1. Notochord
2. Chordata
3. Prochordata
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1. Notochord -it is a supportive rod like hard structure which is found in all chordates during some time of their life cycle.
2. Chordata - these characters may not be present all the time, but these are present essentially at least at certain stage of life cycle.
3. prochordata - these are very primitive chordates, in which notochord is present at some stage of life. vertebral column is never present.
2. Chordata - these characters may not be present all the time, but these are present essentially at least at certain stage of life cycle.
3. prochordata - these are very primitive chordates, in which notochord is present at some stage of life. vertebral column is never present.
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