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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Stinson‚ Margie Biology 210 Lab Questions: Phylum Annelida You will learn the answers to most of these questions in class and in lab. Great resource: http://www.bumblebee.org/invertebrates/ANNELIDA.htm 1. What does the word annelida mean? 2. Recall‚ some of the nematode worms appeared superficially to have external rings. Describe true segmentation in annelids. How is the true segmentation in annelids differ from having rings around the ectoderm as in nematodes? 3. What two layers
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Interesting Facts-Annelida • The most recognized image of • feeding arms‚ and mouth of a jellyfish. • There are only about 200 species of Vocabulary- Cnidaria • Aboral end: The opposite side of the oral end. • Anthozoa: The class of the Coelenterata which includes the corals and sea anemones. • Cnidocytes: unique cells that function in defense and the capture of prey. • Cubozoa: Any of Cnidaria Animals in FIGURES- Cnidaria
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Animal Phyla Lab Adapted from “Phylum Lab” produced by the National Aquarium in Baltimore The diversity of animal life on Earth is astounding. Each animal has a unique body plan which allows it to survive and adapt to its given surroundings. With such an abundance of species‚ classifying animals into different categories is necessary. At first the diversity of animals can be overwhelming‚ but after further research and observation‚ many likenesses appear. These similarities become the basis for
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Biology Animal Phylums "Write a three sentence description for each phylum and list two examples for each. Also‚ draw a picture of a common example from each. (or cut out of a magazine). You will be graded on how accurate your information is as well as neatness." Sponges (Porifera): Poriferans don’t have mouths; instead‚ they have tiny pores in their outer walls through which water is drawn. Cells in the sponge walls filter nutrients from the water as the water is carried through the body
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Phylum nematode Characteristics of Nematoda:- 1)Bilaterally symmetrical‚ and vermiform. 2) Body has more than two cell layers‚ tissues and organs. 3) Body cavity is a pseudocoel‚ body fluid under high pressure. 4) Body possesses a through gut with a subterminal anus. 5) Body covered in a complex cuticle. 6) Has a nervous system with pharyngeal nerve ring. 7) Has no circulatory system (no blood system) 8) Reproduction normally sexual and gonochoristic. 9) feed on just about everything
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"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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PHYLUM PORIFERA DELA CRUZ‚ R.‚ DUMLAO‚ D.‚ PASCUA‚ M.‚ SAN JUAN‚ R.‚1 1Department of Biology‚ College of Science‚ University of the Philippines Baguio July 17‚ 2012 ABSTRACT | | |Sponges [Porifera] are unusual animals whose body plans make interpreting phylogenetic relationships within the group and with other basal | |metazoan taxa a difficult task
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Phylum Echinodermata Introduction • Means “spiny skin” in Greek • Echinoderms are found at every ocean depth‚ from the intertidal zone to the abyssal zone. The phylum contains about 6500-7000 living species‚ making it the second-largest grouping of deuterostomes (a superphylum)‚ after the chordates. • Echinoderms are also the largest phylum that has no freshwater or terrestrial (land-based) representatives. Defining characteristics: • A complex series of fluid-filled canals
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Phylum Chordata • The chordates occupy the highest position in the food chain. • The name phylum was derived from the characteristic which all chordates share‚ the notochord – a long‚ elongated‚ and flexible cartilaginous structure that runs the entire length of the body. (Gr. noto = the back; chorde = string) Characteristics: • A dorsal nerve cord located above the notochord‚ it runs the entire length of the body. The nerve cord is a bundle of nerve fibers that connects the
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