that have inhabited our planet for at least 500 million years who spend a portion of their lives as plant-like polyps before transforming into some of the greatest ocean predators‚ all without having any brain‚ heart‚ backbone‚ eyes‚ ears or teeth. Cnidaria‚ otherwise known as jellyfish‚ are gelatinous animals found at all depths within all oceans around the world‚ and are some of the oldest animals evolutionarily speaking. Jellyfish are rather simplistic‚ anatomically speaking. They are diploblastic
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formed when each individual stony coral organism‚ or polyp‚ secretes a skeleton of calcium carbonate. How are corals classified? Corals are classified as animals although they may resemble plants. In scientific classification‚ corals fall under the phylum cnidarian and the class Anthozoa. They are relatives of jellyfish and anemones. There are different types of corals that can be found in different habitats and locations around the world. Just as animals that live on land are endangered‚ coral reefs
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------------------------------------------------- Aquatic animal From Wikipedia‚ the free encyclopedia An aquatic animal is an animal‚ either vertebrate or invertebrate‚ which lives in water for most or all of its life.[1] Some examples of invertebrates are coelenterates. This phylum consists of jellyfish‚ anemones‚ corals‚ and hydras. Another type of invertebrate aquatic animal is the annelids which are segmented worms. There are three different classes they are polychaetes‚ oligochaetes‚ and hirudinea.[2] It may breathe air
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be represented. 4. What are the two hypotheses concerning the origin of bilaterians and what are their differences? 1-Bilateria and Placozoa share a more recent common ancestor than either does to Cnidaria 2- Bilateria and Ctenophora share a more recent common ancestor than either does to Cnidaria. 5. If the stereotypical aliens from the movies (with large heads) were actually the future descendants of Homo sapiens‚ what form of heterochrony must have taken place? Peramorphorsis . –descendant
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Sea anemones are members of the Phylum Cnidarian. The cnidarians include the anemones‚ jellyfish‚ coral‚ Portuguese man-of-war and hydroids. Their characteristics include a soft body with two tissue layers arranged around a central gut cavity. A ring of tentacles surrounds a central mouth‚ and the tentacles endure stinging cells which contain nematocysts used to capture food and for defense. ("Marine Life Profile: Sea Anemones”) The two basic body forms among the cnidarians are the polyp‚ which looks
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Odontodactylus Scyllarus‚ more colloquially referred to as the peacock mantis shrimp‚ gets its name from its bright peacock-like coloration‚ its shrimp-like size‚ and its mantis-like body structure. The mantis shrimp belongs to the kingdom Animalia‚ the phylum Arthropoda‚ the subphylum Crustacea‚ the class Malacostraca‚ the order Stomatopoda‚ the family Odontodactylidae‚ and the genus Odontodactylus (Wikipedia). This species‚ the Odontodactylus Scyllarus‚ belongs to a group of 400 other types of mantis
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Invertebrate Questions True/False Indicate whether the statement is true or false. ____ 1. The acute senses of arthropods are the result of organs such as compound eyes and antennae. ____ 2. Arthropods have a well-developed excretory system consisting of nephridia. ____ 3. The well-developed arthropod nervous system consists of a double ventral nerve cord‚ an anterior brain‚ and several ganglia. ____ 4. Efficient gas exchange in arthropods is accomplished by tracheal tubes‚ book lungs
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BIO 2135 - Animal Form and Function Midterm examination Worth either 10% or 15% of your final grade Tuesday February 9‚ 2010 a) Place your name and student number in the space provided below. Be sure that your name is on the top of each page because the exam will be separated to facilitate marking b) Circle the lab section for your lab. c) Check to be sure that your exam is complete with a total of 12 pages including this one d) Answer all questions in the space provided on the exam. Do not transfer
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Chelydra serpentine belongs to the kingdom Animalia because they are multicellular and eukaryotic heterotrophs. They also belong to the phylum Chordata because they had the following features at some point in their lives: pharyngeal slits‚ dorsal nerve cord‚ notochord‚ post-anal tail. Chelydra serpentine have waterproof skin covered in scales‚ are ectothermic and have hard shelled eggs that are water proof. These features make them a part of the class Reptilia. They belong to the order Testudines
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Head and tentacles of a banana slug Banana slugs are often bright yellow (giving rise to the banana sobriquet) although they may also be greenish‚ brown‚ tan‚ or white. The species Ariolimax columbianus sometimes has black spots that are so extensive that the animal looks almost entirely black. Individual slugs will change colors with alterations in food consumption‚ light exposure‚ and moisture levels. Color may also indicate whether a slug is healthy or injured or what age it is.[4] The Pacific
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