<h2>Phylum Chordata</h2>
<p>Animals in the phylum <strong>Chordata</strong> share four key features that appear at some stage of their development: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail. In some groups, some of these <a href="https://app.ulearngo.com/tutorials/introducing-genetics/mendelian-inheritance">traits</a> are present only during embryonic development.</p>
<p>In addition to containing vertebrate classes, the phylum Chordata contains two clades of invertebrates: Urochordata (tunicates) and Cephalochordata (lancelets). Most tunicates live on the <a data-lesson="summarizing-aquatic-biomes" data-subject="biology" data-tutorial="ecology-biosphere" href="https://app.ulearngo.com/biology/ecology-biosphere/summarizing-aquatic-biomes">ocean</a> floor and are suspension feeders. Lancelets are suspension feeders that feed on phytoplankton and other microorganisms.</p>

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Phylum Chordata

Biology studies life and living organisms. Biology can be divided into different sections that cover the morphology, physiology, anatomy, behavior, and so on of living organisms.

Biology

Discover the vast world of invertebrates, from the morphology and physiological processes of sponges to the classes of echinoderms and summary of the superphyla Lophotrochozoa, Ecdysozoa, and Deuterostomia.


Phylum Chordata

Phylum Chordata

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