They are hermaphrodite and protogynous female reproductive organ maturing faster than male animals. Body shape can be cylindrical, vaselike, rounded or saclike. Phylum porifera worksheet for 9th higher ed lesson planet. Characteristics of phylum cnidaria biology for majors ii. Characteristics and classification biology educare. Atkinson lj and sink kj eds field guide to the ofshore marine invertebrates of south africa.
In contrast, the complexity of metazoans or multicellular animals. Name that phylum and class i characteristics of poriferan. General characteristic features of phylum porifera. They are aquatic and sessile, living permanently attached to submerged objects. Characteristics of earliestcharacteristics of vertebrates craniates 1. Invertebrate phyla characteristics phylum porifera sponges means pore bearing no true tissues or organs most primitive of the multicellular animals adults are sessile adults typically asymmetrical have some regeneration capabilities flagellated cells choanocytes drive water through canals and chambers. Bodies completely covered with bony armor plates 4. Porifera use canals and pores diffusion to perform life functions.
Invertebrate phyla characteristics phylum porifera sponges. Porifera have no real body layers but they do have 2 cell layers. Sponges are so simple that they used to be thought of as a plant because they dont move place to place like most animals. Body is cylindrical, asymmetrical or has radial symmetry. Pdf the porifera are a wellcharacterised group of aquatic, predominantly marine animals including about 5000 described species. Introduction to phylum porifera lowest multicellular animals or metazoans without true tissues, i. Sponges do not move so they must feed on food particles suspended in the water around them. A phylum of simple multicellular animals, with a simple body enclosing a single central cavity or. Sponges sponges are considered the oldest animal group.
An example of the polyp form is hydra spp perhaps the most wellknown medusoid animals are the jellies jellyfish. Comparison of the major animal phyla common namecommon name phylum spongesspongessponges porifera hydra, anemones, jellyfishhydra, anemones, jellyfish cnidaria flatwormsflatworms platyhelminthes roundwormsroundworms nematoda segmented wormsegmented worms sss annelida. Porifera are most commonly asymmetrical but can also have radial symmetry. Some form crusts, some are simple tubes, some are vase shape while others can be cup shaped, massive clumps, fan shaped, finger like bulges, treelike or even bushy. This phylum porifera worksheet is suitable for 9th higher ed. The small openings are the entrances to a complex system of channels.
Phylum porifera includes simple metazoan animals which are known as sponges. These animals are distinct from the protozoa in having a cellular. Phylum porifera is divided into the following four classes on the basis of the skeleton system. They dont have heads, arms, or legs, and they dont have any internal organs. General characteristics of phylum porifera biology. Porifera are pore bearing organisms, commonly known as sponges, that come in all shapes, sizes, and colors. The one main animal in the porifera phylum is a sponge. The phylum porifera is subdivided into four recent classes. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Phylum porifera advanced the shape of life the story of. Poriferans are diploblastic animals, they show outer pinacoderm, dermal layer, inner choanoderm gastral layer and in between them. They are sessile and sedentary and grow like plants. How does the name porifera relate to the structure of a sponge.
Learn classes 5 phylum with free interactive flashcards. For how long did singlecelled organisms dominate the earth. Department of zoology at andczoology museummuseum specimens. The gastrotrichs were previously united with rotifers by ehrenberg in 1838. Porifera, cnidaria, and worms, is a 46 slide power point presentation, 5 pages of students notes, 3 formative assessments and one quiz.
Porifera characteristics characteristics of phylum porifera. This skin has lots of small pores and a few large openings. Phylum porifera free download as powerpoint presentation. Class calcarea contains calcium carbonate spicules and no spongin, class hexactinellida contains sixrayed siliceous spicules and no spongin, and class demospongia contains spongin and may or may not have spicules. That said, the emphasis of these practice questions falls on phylum porifera, choanocytes, and. Choose from 500 different sets of classes 5 phylum flashcards on quizlet. Life on earth, 5 th edition teresa and gerald audesirk comparison of the major animal phyla common namecommon name phylum snails, clams, squidsnails, clams, squidsnails, clams, squid. Characteristics of phylum porifera sponges phylum porifera is included in sub kingdom parazoa introduction. Characteristics of phylum porifera sponges have a variety of shapes. Parazoans beside animals do not display tissuelevel organization, although they do have specialized cells that perform specific functions.
The approximately 5,000 living sponge species are classified in the phylum porifera, which is composed of three distinct groups, the hexactinellida glass. Familiar as sponges, these animals are wellknown for their ability to absorb and withhold fluids. Porifera, or sponges, are the simplest and oldest of the multicelled animals, with fossils dating back to precambrian times. Characteristics of phylum porifera sponges phylum porifera is included in sub kingdom parazoa. Nov 11, 20 the phylum porifera include more than 5000 animal species, mostly marine, but includes about 150 fresh water inhabitants also. The world of sponges is a bit more vast than you might be aware of. Robert grant 1836 coined the word porifera and kept sponges in it. Phylum porifera the shape of life the story of the animal. This worksheet has 1 graph, 2 short answer, and 15 fill in the blank questions. Some of the important characteristics of phylum porifera are mentioned below. What are the characteristics of the loricifera phylum. More than 5,000 species are known, most of which occur in. About the phylum porifera the robinson library, where.
This editable presentation is designed to help you teach the topic of. In this porifera worksheet, students compare and contrast the characteristics of the organisms found in this phylum. What is the distinctive characteristic of the phylum. The word porifera comes from the latin porus, or pore, plus ferre, to bear. Metschnikoff 1864 separated the gastrotrichs from rotifers and gave. Sexual reproduction occurs by the production of ova and sperm. Phylum porifera, or the sponge, is entirely aquatic, with over 98 percent living in the ocean, and the rest living in freshwater lakes and streams, according to biomedia associates. There are following characteristics of the phylum porifera. Its name comes from the latin roots porus, which translates to pores, and ferre, which means to bear. In this article we will discuss about phylum gastrotricha. The sponge serves an important purpose in filtering bacteria and other contaminants from water, and it forms a significant portion of coral reefs. Phylum porifera the shape of life the story of the.
Invertebrate phyla characteristics phylum porifera sponges means pore bearing no true tissues or organs most primitive of the multicellular animals adults are sessile adults typically asymmetrical have some regeneration capabilities flagellated cells choanocytes drive water through canals and. Why is a singlecelled organism not classified as an animal. Development is indirect and larva amphiblastula or parenchymula is free swimming. Phylum porifera characteristics, types, functions and. Chapter 8 phylum porifera to protect the rights of the authors and publisher we inform you that this pdf is an uncorrected proof for internal business use only by the authors, editors. Hexactinellida, demospongiae, calcarea, and homosclero. Sponges have managed to conceal their true animal nature for several centuries.
They are mainly marine, but few are fresh water forms. These are multicellular organisms which are sessilesedentary in nature. Pdf freshwater sponges, at present considered monophyletic, belong to the suborder spongillina. Description, classification, synonyms of phylum porifera sponges. The invertebrates, or invertebrata, are animals that do not contain bony structures, such as the cranium and vertebrae. Porifera, or the sponge phylum, lives mostly in marine environments. Porifera are filter feeders, meaning they filter food out of the water. Water is inhaled through small pores 10100 m in diameter, traverses the afferent canals towards the choanocyte chamber and is expelled through efferent canals and the larger exhalant osculum. Characteristics of phylum porifera flashcards quizlet. Upright stalked form with coalescent fused tubular branches that terminate in rounded ends with slightly raised. General characteristics of phylum porifera some of the characteristics are.
They are found in both fresh and saltwater environments, and in shallow or deep waters. Phylum porifera characteristics, types, functions and reproduction development. Phylum porifera is classified mainly basing on skeleton. It comprises porebearing animals found in fresh or marine water. However, local taxonomic knowledge of this phylum is largely incomplete. This pathway of water is helpful for respiration, food gathering and removal of waste. The simplest phylum, theres not much to a porifera animal. Feb 04, 2017 loricifera is a phylum of very small to microscopic marine cycloneuralian sedimentdwelling animals with 36 defined species, in eight genera. Biology, comparison of the major animal phyla, chart. These multicellular organisms technically have no organs, muscles, digestive track or brains.
Many sponges can filter their entire body volume in less than one minute. The porifera are a wellcharacterised group of aquatic, predominantly marine animals including about 5000 described species. They are multicellular but dont have tissues or organs the name porifera means pore bearer in latin a pore is a tiny hole. Most of them are marine while a few are fresh water forms. Asexual reproduction takes place by budding and gemmule formation. They found in all seas, wherever there are rocks, shells, submerged timbers, or coral to provide a suitable substratum. There are three classes, the hexactinellida, or glass sponges, the. Although sponges are one of the major components of littoral ecosystems, their systematics obviously lags behind that of the majority of other groups of marine invertebrates. Porifera are all aquatic, mostly marine except one family spongillidae which lives in freshwater.
A sponges body is covered by a skin, one cell thick. The word refers to the fact that the surface of a sponges body is covered with tiny pores. The simplest of all the invertebrates are the parazoans, which include only the phylum porifera. Animals in this phylum display two distinct morphological body plans. They are generally marine aquatic organisms, with a few freshwater species. They are diploblastic animals with two layers, the outer dermal layer and the inner gastral layer. It is the only phylum of the animal subkingdom parazoa and represents the least evolutionarily advanced group of the animal kingdom. The presence and composition of spiculesspongin are the differentiating characteristics of the three classes of sponges shown in figure 3. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jellylike mesohyl sandwiched between two thin layers of cells. Most sponges prefer relatively shallow water, but some groups including most glass sponges, live in deep water. With neither true tissues nor organs, sponges are the most primitive of multicellular animals. They vary in size from less than a centimeter to a mass that can fill your arm.
Start studying characteristics of major animal phyla. Porifera authors touiek samaai 1, robyn payne2, seshnee maduray, and liesl janson citation samaai t, payne rp, maduray s and janson l. Characteristics of major animal phyla flashcards quizlet. Polyp forms are sessile as adults, with a single opening to the digestive system the mouth facing up with tentacles surrounding it.
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