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Observe the diagram1. Identify the phylum of this hypothetical organism. 2. List out the features that helps in identifying it. 3. Write about the fate of notochord in Urochordata, Cephalochordata and Chordata. |
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Answer» 1. Chordata 2. Notochord, Dorsal nerve cord, Pharyngeal gill slits, Post anal tail 3. In Urochordatarotochond is present only in larval tail. In Cephalochondata, notochord extends from head to tail region is persistent throughout their life. In vertebrata, the notochord is replaced by a cartilagenous or bony vertebral column in the adults. |
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