Biology 3229F/G Lecture Notes - Lecture 8: Ciona, Hemichordate, Vertebrate
10 Dec 2016
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We are part of the larger phylum chordata. Arthropods are the most dominant group, then the mollusca, next nematoda. They are successful but they aren"t as successful as arthropods, mollusca, or. At stage 14 of development curved around, has a head (cephalized), see segments, We"re a twig in a large bush don"t dominate in complexity. Think of the map of diversity that is out there should be able to. Cnidarians and sponges over in the basal group. Metazoan, bilateral separates the rest of the animals from cnidarians and sponges. All the traits in blue **should know these traits for the exam. Of those 50,000, there is approximately 2 or 3000 that are invertebrates anterior to the posterior end of the animal; aids in locomotion. Three subphylum: urochordata (invertebrates, tunicada), cephalochordata (ampioxes), vertebrata. Body covered by a complex secreted case = tunic; a cellulose-like material *unique. Last 2 are primarily pelagic where the first one is primarily benthic.
