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https://quizlet.com/22340474/biology-2040-lab-final-exam-flash-cards/
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https://sites.google.com/site/chordatestunicatesandlancelets/special-features
Lancelets have a closed circulatory system that resembles one of a primitive fish. There is no heart, blood cells, or hemoglobin. Body Support: Tunicates are covered with a thick tunic, which consists of some cells, blood vessels, and a secretion of a variety of proteins and carbohydrates, including cellulose.
https://en.wikipedia.org/wiki/Lancelet
The circulatory system carries food throughout their body, but does not have red blood cells or hemoglobin for transporting oxygen. Lancelet genomes hold clues about the early evolution of vertebrates, by comparing genes from lancelets with the same genes in vetebrates, the change in gene function as vetebrates evolved can be discovered.Kingdom: Animalia
https://quizlet.com/20837128/bio-ii-lab-practical-flash-cards/
Not in polyp stage, but some Cnidarians swim in medusa stage. Hydra, support system. None
http://bio1903.nicerweb.com/Locked/media/lab/animalia/diversityII/key1152.html
Jul 13, 2009 · Summary Table of Animal Characteristics. Roundworm: Symmetry: bilateral Tissue Organization: triploblastic Type of Body Cavity: pseudocoelom Digestive Openings: mouth, anus Circulatory System: none Habitat: various; Ascaris is parasitic Respiratory Organs: none (anaerobic) Excretory System: lateral lines Locomotion: crawl with muscle fibers Support System: hydrostatic …
https://www.chegg.com/homework-help/questions-and-answers/phylum-animal-habitat-symmetry-tissue-organization-body-cavity-locomotion-support-system-d-q25206822
Question: Phylum Animal Habitat Symmetry Tissue Organization Body Cavity Locomotion Support System DIgestive System Respiratory System Excretory System Nervous System Circulatory System Nematoda Roundworm Mollusca Clam Mollusca Squid Annelida Earthworm Arthropoda Crayfish Arthropoda Grasshopper Echinodermata Sea Star Chordata Subphylum Cephalochordata Lancelet ...
https://ucmp.berkeley.edu/chordata/cephalo.html
Introduction to the Cephalochordata. It's a long way from amphioxus. . . With about twenty-five species inhabiting shallow tropical and temperate oceans, the Cephalochordata are a …
https://www.earthlife.net/inverts/cephalochordata.html
The Cephalochordata are a small subphylum (about 28 species) of of small, 5 to 10 centimetres long, but fascinating animals. visually they look like simplified fishes, and they are quite capable of swimming short distances. Normally however they prefer to spend their time in the sand of marine shores. All known species are marine.
https://answers.yahoo.com/question/index?qid=20090429062824AA2DyQN
Apr 29, 2009 · The lancelet notochord, unlike the vertebrate spine, extends into the head. Like vertebrates, muscles are arranged in blocks called myomeres. 11.Pig. Bilateral symmetry. Nervous system organization: Spinal cord is protected by bony vertebral column, like alll vertebrates. Pigs have body systems that are very similar to humans.
https://www.britannica.com/animal/cephalochordate
Cephalochordate, also called acrania, any of more than two dozen species belonging to the subphylum Cephalochordata of the phylum Chordata.Small, fishlike marine invertebrates, they probably are the closest living relatives of the vertebrates. Cephalochordates and vertebrates have a hollow, dorsal nerve cord, pharyngeal gill slits, and a notochord.
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