1. Tardigrade
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  4. In vertebrates, the notochord is modified into

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Q. In vertebrates, the notochord is modified into

NTA AbhyasNTA Abhyas 2022

Solution:

The members of subphylum vertebrata possess notochord during the embryonic period. The notochord is replaced by a cartilaginous or bony vertebral column in the adult. Besides the basic chordate characters, vertebrates have a ventral muscular heart with two, three or four chambers, kidneys for excretion and osmoregulation and paired appendages which may be fins or limbs.