WebEvolution. The exact relationships between the different cnidarian groups are unknown. Among theories proposed on the evolution of the phylum Cnidaria, most treat the radial symmetry and tissue level of organization as evidence that the group is primitive (that is, it evolved before the evolution of bilateral symmetry) and hold that the medusa is the … WebIn the above example, the biodiversity curve measures the changes in world-wide diversity over time. It was compiled by counting the number of marine families present in each time interval. This curve was created by Jack Sepkoski using thousands of data sets from around the world and it represents the work of hundreds of paleontologists.
Cnidaria - Augsburg University
WebBiol 305 Animal Diversity Cnidaria Lab 4 Part 1 (continued). Aiptasia (Anthozoa: Actiniaria) Aiptasia is a small sea anemone which lives on hard substrates in shallow seas from the temperate zone to the tropics. It is well known to aquarists as a weedy species that often appears in seawater aquaria. It harbours symbiotic dinoflagellates and is currently being … Webcommon clown fish; sea anemone. One of the best-known cnidarian symbioses is the mutualism between 10 species of tropical anemones and 26 species of anemone fish (such as the clown fish). These fishes live within the protective field of anemone tentacles, where they take refuge when a predator threatens. Immunity of the fishes to the stings of ... competencies in cv examples
Biology Test 3 Chapter 18 Flashcards Quizlet
WebVerified answer. physics. We used the muon experiment to test which of the following hypotheses? (a) the existence of ether, (b) time dilation, (c) length contraction. Verified answer. biology. Depending on how closely related species are, scientists must choose a molecule with an appropriate _________________ rate to use as a molecular clock . Web7. General cnidarian life cycle: alternation between polyp and medusa ; polyp --> medusa --> gametes --> planula --> polyp --> etc. many variations/modifications of basic pattern … WebOct 25, 2024 · Both Cnidarians and sponges are benthic, but some of the life cycles of members of the phylum Cnidaria live freely swimming in waters and planktonic in the medusa phase, such as from the class ... ebl foaming lash wash