Destination of notochord in vertebrates and in protochordate
Write the destination of notochord in vertebrates and in protochordates?
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In vertebrates, the notochord vanishes and gives birth to the spinal column (that is, vertebral column). In protochordates, the notochord remains for the rest of life.
Name the kind of digestive system of echinoderms? Answer: Echinoderms exists a complete digestive system, with anus and mouth.
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Which arthropod group is the most diversified animal group of the planet? How can this evolutionary achievement be described?
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Specify the constitution of the air before the life of originon the earth?
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