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Unitteststudyguide - Amphibian traits - Aquatic/...

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Amphibian traits - Aquatic/ terrestrial organisms that walk in a swagger (side-to-side manner) motion. Amphibians were the first tetrapods on Earth. These early tetrapods most likely evolved from a two-legged ancestor Annelida - Flexible and segmented, these organisms are flexible and mobile, rapidly burrowing through soil. The three main Annelide groups are: Earthworms, and their relatives, polychaetes (form the largest group of annelids), and leeches. Archaea - A kingdom of prokaryotes. Archaea is comprised of prokaryotes that are distinct from bacteria Arthropoda - Organisms that are protected with an exoskeleton. This exoskeleton provides points of attachment for the muscles that move appendages. Anthropods can use their appendages for defense, reception, walking, swimming, or hunting. Cambrian explosion - An epoch of great animal diversity that comprised of new different phyla Chordata - Chordata are distinguished from other phyla by these four traits: a dorsal hollow nerve chord, a notochord, a flexible, supportive, longitudinal rod located between the digestive tract and the nerve chord; pharyngeal (gill) slits, located in the pharynx, the region just behind the mouth; and a muscular post-anus tail. These four traits are usually found in the phylum Chordata. Cnidaria - Cnidaria usually have two cell layers, an outer stinging epidermis (skin), and a cell layer that lines the digestive tract. The jelly-filled middle region might have scattered amoeboid cells. Contractile tissue and nerves are present in their simplest forms in Cnidaria. Conjugation - the union (mati n g) of two bacterial cells or protist cells and the transfer of DNA between two cells. Connective tissue - Consists of cells scattered through an extracellular matrix. The most common type of connective tissue in the human body is called loose connective tissue because its matrix is a loose weave of fabrics made of ropelike protein collagen. These tissues are elastic and strong. Another type of connective tissue are fibrous connective tissue. These tissues have a matrix of densely packed parallel bundles of collagen. Examples of
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This note was uploaded on 04/05/2012 for the course BIOL 101 taught by Professor Lexicon during the Spring '11 term at Ohlone.

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Unitteststudyguide - Amphibian traits - Aquatic/...

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