3 years ago

Help plz:

Biology

1 answer:

krek1111 [17]3 years ago

3 0

The phylum Chordata is characterized by the presence of a notochord. The notochord provides skeletal support, gives the phylum its name, and develops into the vertebral column in vertebrates. The dorsal hollow nerve cord develops into the central nervous system, namely the brain and the spine.
Many important traits evolved in invertebrates. They include: multicellularity, tissues and organs, radial and bilateral symmetry, cephalization, mesoderm, complete digestive system, coelom, segmented body, and notochord.

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