"soft")‚ which is generally protected by a hard‚ calcium- containing shell. In some forms however‚ the shell has been lost in the course of evolution‚ as in slugs and octopuses‚ or greatly reduced in size and internalized‚ as in squids. Mollusks (Phylum Mollusca) are found in marine‚ brackish‚ and fresh waters. They include a diverse group of animals such as clams‚ mussels‚ oysters‚ scallops‚ abalone‚ conchs‚ shipworms‚ snails‚ nudibranchs‚ chitons‚ squids‚ and octopuses. Common methods of introduction
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The two phyla Cnidaria and Ctentophora makeup the radiate animals. Most radiates have tentacles or oral extensible projections around the oral end that are armed with cells that may function in defense and capture prey. The cells found within the tentacles are structurally and functionally unique to each phylum‚ such as the cindocytes in Cnidarians and colloblasts in Ctenophores. Cnidarians capture prey with special stinging cells called cindocytes. These cells are found throughout the epidermis
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Organ Systems Project (Digestive‚ Excretory‚ Circulatory‚ Reproductive‚ Nervous) There is an enormous variety of life on our planet Earth ranging from simple cell bacteria to complex multicellular animals. Animals are creatures in the kingdom Animilia‚ one of the kingdoms in Whitakers 5 kingdom system. Their bodies consist of 555tanimal eukaryotic cells. Meaning their cell or cells contain a nucleus‚ are surrounded by a cell membrane (phospholipid bilayer) and can self-reproduce in a free
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Cytochrome-C Comparison Brief Description: The molecular clock refers to mutations in DNA nucleotide sequence of genes occurring at a constant rate over time. The greater the difference in nucleotide sequence between two individuals of different species‚ the greater the amount of time has passed since they diverged from a common ancestor. The molecular clock helps to provide evidence to support conclusions previously based on comparative morphology and fossil records. Hypothesis: One hypothesis
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Aurelia aurita. It is one of the most common jellyfish along the Atlantic Coast. It is reportedly less venomous than other jellyfish. The Moon Jellyfish is usually translucent white‚ pink or beige. It is in the Kingdom Animalia‚ Followed by the Phylum Cnidaria. The Moon Jellyfish is in the class Scyphozoa. Its belongs to the order Semaeostomeae. It is in the family Ulmaridae and the Genus Aurelia. The Moon Jellyfish belongs to the Species A. aurita. The Moon Jellyfish has nematocysts on its tentacles
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M.fasciatus biodiversity issues and conservation The banded anteater (Myrmecobius Fasciatus) is a small marsupial found only in Australia. The M.fasciatus has pale fur on the underbelly and coarse reddish-brown fur above on the back which is darkest on the rump refer to figure 1 (Sydenham‚ 2012). There are four to eleven noticeable white stripes across the back between the shoulders and tail (|The Western Australian Education‚ 2013). The reason for the stripes is that it projects as an effective
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Fall 2012 BISC 120Lg – M/W/F 10 A.M. section EXAM 3 Instructor: Dr. Karla Heidelberg PLEASE READ ALL THE INSTRUCTIONS CAREFULLY. 1.DO NOT start until instructed. 2.Make sure you have a total of 9 pages. Instructions for filling in the Blue Scantron Answer Sheet: 1. Enter your name in the NAME field (your last name first)‚ and fill in the appropriate bubbles. 2. Enter your USC STUDENT ID NUMBER in the field labeled IDENTIFICATION NUMBER‚ and fill in the appropriate bubbles
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Phylum Annelida L. annelleus = little ring Annelida have bodies consisting of many essentially similar ringlike segments (somites or metameres).This segmentation usually shows in both external and internal features‚ including muscles‚ nerves‚ and circulatory‚ excretory and reproductive organs. Phylum Annelida This phylum is divided into three classes: Oligochaeta: Earthworms - Most earthworms and their equals are inhabitants of damp soil and fresh waters. Hirudinea: Leeches - The leeches
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either drift on the currents or catch the wind with their pneumatophores. To avoid threats on the surface‚ they can deflate their air bags and briefly submerge. The Portuguese man-of-war (Physalia physalis) Classification: Kingdom Animalia Phylum Cnidaria Class Hydrozoa Order Siphonophora Suborder: Rhizophysaliae Family: Physaliidae Genus: Physalia Species: Physalia physalis What is it? The Portuguese man-of-war is a spectacular object to behold. While it may look something like other
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Name _______________________ Period ___________ Date ____________________ NONCOELOMATE INVERTEBRATES (CH 32) Sponges are basal animals that lack true tissues 1. Sponges are in the phylum Porifera. This group is now known to be polyphyletic‚ and all sponges belong to either phylum Calcarea or phylum Silicea. They are the simplest animals and lack true tissues. Label the following: pores‚ spongocoel‚ epidermis‚ amoebocytes‚ choanocyte‚ flagellum‚ spicules‚ epidermis‚ and mesohyl.
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