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Question
In _______, notochord is present only in larval tail while in ________, it extends from head to tail region and is persistent throughout their life.
In _______, notochord is present only in larval tail while in ________, it extends from head to tail region and is persistent throughout their life.
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Solution
The correct option is B Urochordata and Cephalochordata
Phylum Chordata is divided into three subphyla - Urochordata,
Cephalochordata and Vertebrata.
Urochordata is characterised by the presence of notochord only in larval tail.
In Cephalochordata, notochord extends from head to tail region and is persistent throughout their life.
The notochord of Vertebrata is replaced by a cartilaginous or bony vertebral column in the adult.
Phylum Chordata is divided into three subphyla - Urochordata,
Cephalochordata and Vertebrata.
Urochordata is characterised by the presence of notochord only in larval tail.
In Cephalochordata, notochord extends from head to tail region and is persistent throughout their life.
The notochord of Vertebrata is replaced by a cartilaginous or bony vertebral column in the adult.
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