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Topic: Rhombozoa


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  Animal - Open Encyclopedia   (Site not responding. Last check: 2007-10-08)
Sponges are sessile and usually feed by drawing in water through pores all over the body, which is supported by a skeleton typically divided into spicules - the cells are differentiated, but not organized into distinct groups.
There are also three problematic phyla - the Rhombozoa, Orthonectida, and Placozoa - that have an unclear position with respect to other animals.
When they were first discovered, the Protozoa were considered as an animal phylum or subkingdom, but as they are generally unrelated and often as similar to plants as animals, a new kingdom, the Protista, was devised to hold them.
open-encyclopedia.com /Animal   (1953 words)

  
 Rhombozoa -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-10-08)
Rhombozoa is a phylum of tiny (A living organism characterized by voluntary movement) animals that live in the (Liquid excretory product) urine of (Marine mollusk characterized by well-developed head and eyes and sucker-bearing tentacles) cephalopods.
Adults have about 30 cells each, including an axial cell with the (additional info and facts about cilia) ciliated cells arranged around it.
Reproductive cells inside the axial cell produce vermiform offspring, which are just like adults but smaller, or infusorigens, which are (A gland in which gametes (sex cells) are produced) gonads and produce infusoriform larvae.
www.absoluteastronomy.com /encyclopedia/r/rh/rhombozoa.htm   (92 words)

  
 MESOZOA - LoveToKnow Article on MESOZOA   (Site not responding. Last check: 2007-10-08)
The genus Haplozoon of which two species have been found in the worms Travisia and Clymene by Dogiel is classed as a new gioup of Mesozoa.
The original idea that in the Rhombozoa and Orthonectida we had animals intermediate between the Protozoa and Metazoa is no longer widely held.
The modern view is that the simplicity of their structure is secondary axfd not primary, and is correllated with their parasitic habit of life.
www.1911encyclopedia.org /M/ME/MESOZOA.htm   (964 words)

  
 Encyclopedia: Rhombozoa
Rhombozoa, or Dicyemida, is a phylum of tiny parasites that live in the renal appendages of cephalopods.
Although the name Dicyemida preceeds Rhombozoa in usage, and is preferred by most contemporary authors, Rhombozoa still enjoys much popular support.
Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms.
www.nationmaster.com /encyclopedia/Rhombozoa   (863 words)

  
 Colonial Theory-
One, the Orthonectids are parasitic, the other Rhombozoa, are probably commensals that evolved from a parasitic habit- and as you will see as this course continues-parasitism and complex life cycles seem to go together.
It has been suggested that the invagination of the ventral surface may have been the origin of gastrulation among animals and that Trichoplax is very likely an extant representative of an intermediate between the protozoa and the metazoans.
My personal view is that Rhombozoa and Orthonectids are extremely derived flatworms with highly reduced body plans geared almost exclusively for reproduction-not primitive organisms.
comenius.susqu.edu /bi/322/IZLecture6.htm   (4287 words)

  
 MESOZOA - Encyclopedia Britannica - MESOZOA - JCSM's Study Center   (Site not responding. Last check: 2007-10-08)
The genus, Haplozoon: of which two species have been found in the worms "Travisia and Clymene byDogiel is classed as a new group of Mesozoa.
that in the Rhombozoa and Orthonectida we had animals intermediate between the Protozoa and Metazoa is no longer widely held.
The modern view is that the simplicity of their structure is secondary and not primary, and is correllated with their parasitic habit of life.
www.jcsm.org /StudyCenter/Encyclopedia_Britannica/MEC_MIC/MESOZOA.html   (958 words)

  
 [No title]
Psych Central Rhombozoa - Provides a description of representative members of this phylum.
Rhombozoa Genomes - Presents sequences available for this group.
Systema Naturae 2000/Classification Class Rhombozoa - Provides a system for classifying members of this group of animals.
botw.org /top/Science/Biology/Plants_and_Animals/Animalia/Rhombozoa   (228 words)

  
 MESOZOA - Online Information article about MESOZOA
The Mesozoa com- prise two classes: (i) the Rhombozoa, which are found only in the kidneys of Cephalopods, and(2)the Orthonectida, which infest specimens of Ophiurids, Poly- chaets,Nernertines,Tur- bellaria and possibly other See also:
The Rhombozoa comprises two orders : (a) Dicyemida, ciliated vermiform creatures whose polar cap has 8 or 9 cells arranged in two rows (Dicyema, Koll., Dicyemennea, Whitm.) ; (b)Heterocyemida, non-ciliated animals with no polar (From See also:
idea that in the Rhombozoa and Orthonectida we had animals intermediate between the Protozoa and Metazoa is no longer widely held.
encyclopedia.jrank.org /MEC_MIC/MESOZOA.html   (1107 words)

  
 American Zoologist: Metazoan relationships on the basis of 18S rRNA sequences: A few years later...   (Site not responding. Last check: 2007-10-08)
The third case study concerns the relationships of the mesozoan taxa Orthonectida and Rhombozoa, whose evolutionary origin has been controversial for many years.
Some consider Mesozoa as very primitive organisms that link protists and animals (e.g., Lapan and Morowitz, 1972; Margulis and Schwartz, 1988), while others believe that the simplicity of Mesozoa is secondary and regard them as degenerate flatworms because of their morphological resemblance with flatworm larvae and their complex life cycle (Stunkard, 1954, 1972).
Indeed, some consider the morphological similarity between both Orthonectida and Rhombozoa to be purely superficial and the result of convergence due to similar lifestyles (e.g., Brusca and Brusca, 1990).
www.findarticles.com /p/articles/mi_qa3746/is_199812/ai_n8824743/pg_2   (1130 words)

  
 Animals Scientific classification Scientific classification ...
Sponges are sessile and usually feed by drawing in water through pore pores all over the body, which is supported by a skeleton typically divided into spicules - the cells are differentiated, but not organized into distinct groups.
There are also three problematic phyla - the Rhombozoa Rhombozoa, Orthonectida Orthonectida, and Placozoa Placozoa - that have an unclear position with respect to other animals.
When they were first discovered, the Protozoa were considered as an animal phylum or subkingdom, but as they are generally unrelated and often as similar to plants as animals, a new kingdom, the Protist Protista, was devised to hold them.
www.biodatabase.de /Animal   (1501 words)

  
 Science / Biology / Flora and Fauna / Animalia / Rhombozoa - My Personal HOME PAGE
My Personal Directory : Science : Biology : Flora and Fauna : Animalia : Rhombozoa
ACDSee 8 is a great photo management software for organizing, improving and editing photos.
Rhombozoa category powered by Free PHP ODP Script © Site Directory
mypersonalhomepage.net /index.php?c=Science/Biology/Flora_and_Fauna/Animalia/Rhombozoa   (495 words)

  
 Baccarat Hotel   (Site not responding. Last check: 2007-10-08)
The identification of baccarat hotel the "hosts" with the stars comes to the same thing; the stars were thought of as closely connected with angels.
There are also three problematic phyla - the Rhombozoa, baccarat necklace Orthonectida, and Placozoa - that have an unclear position with respect to other animals.
However, the amount of soot produced by a candle is generally more dependant on environmental conditions
baccarat.hostrim.com /baccarat/hotel.html   (838 words)

  
 Rhombozoa
Looking For rhombozoa - Find rhombozoa and more at Lycos Search.
rhombozoa in the Free Online Encyclopedia - Read about rhombozoa in the free online encyclopedia and dictionary.
Search for rhombozoa at eBay - At eBay you can find practically anything, even rhombozoa.
www.supercrawler.com /Science/Biology/Flora_and_Fauna/Animalia/Rhombozoa   (105 words)

  
 Ali-Baba.com » Science » Biology » Flora and Fauna » Animalia » Rhombozoa
Ali-Baba.com » Science » Biology »; Flora and Fauna » Animalia »; Rhombozoa
Below are some useful links about Rhombozoa on Animalia:
The content of this page about Animalia Rhombozoa is based on the Open Directory Project.
www.epagneuls.com /Science/Biology/Flora_and_Fauna/Animalia/Rhombozoa   (78 words)

  
 Free PHP ODP Script : Science : Biology : Flora and Fauna : Animalia : Rhombozoa   (Site not responding. Last check: 2007-10-08)
Free PHP ODP Script : Science : Biology : Flora and Fauna : Animalia : Rhombozoa
Help build the largest human-edited directory on the web.
Rhombozoa category powered by SEO India - Search Engine Optimization and Ranking Services © SEO India Experts - Leading Search Engine Optimization CompanyBhopal Online - First Online Selling Portal of BhopalABCD Hotell Oslo House for rent furniture store india"> faq BPO India"> 4
www.rishimultitrades.com /dir/index.php?c=Science/Biology/Flora_and_Fauna/Animalia/Rhombozoa   (104 words)

  
 Rhombozoa   (Site not responding. Last check: 2007-10-08)
Canadian Content > Science: Biology: Flora_and_Fauna: Animalia: Rhombozoa:
Additional Information: Canadian Content has no additional information.
Modified by Canadian Content © 1997 - 2005.
www.canadiancontent.net /dir/Top/Science/Biology/Flora_and_Fauna/Animalia/Rhombozoa   (42 words)

  
 [No title]   (Site not responding. Last check: 2007-10-08)
Taenia solium (pork tapeworm) e.g Echinococcus (dog tapeworm)¡6\  ªP óóŸ¨34 Animal PhylaŸ¨¡Porifera Nematoda Tardigrada Placozoa* Nematomorpha Arthropoda Monoblastozoa* Acanthocephala Mollusca Rhombozoa Entoprocta Phoronida Orthonectida Gnathostomulida Ectoprocta Cnidaria Priapula Brachiopoda Ctenophora Loricifera* Echinodermata Platyhelminthes Cyliophora* Chaetognatha Nemertea Sipuncula Hemichordata Rotifera Echiura Chordata Gastrotricha Annelida Kinorhyncha Onychophora *
 - 5 óZ ’Ÿ¨34 Animal PhylaŸ¨¡Porifera Nematoda Tardigrada Placozoa* Nematomorpha Arthropoda Monoblastozoa* Acanthocephala Mollusca Rhombozoa Entoprocta Phoronida Orthonectida Gnathostomulida Ectoprocta Cnidaria Priapula Brachiopoda Ctenophora Loricifera* Echinodermata Platyhelminthes Cyliophora* Chaetognatha Nemertea Sipuncula Hemichordata Rotifera Echiura Chordata Gastrotricha Annelida Kinorhyncha Onychophora *
ó’ ¯Ÿ¨34 Animal PhylaŸ¨¡Porifera Nematoda Tardigrada Placozoa* Nematomorpha Arthropoda Monoblastozoa* Acanthocephala Mollusca Rhombozoa Entoprocta Phoronida Orthonectida Gnathostomulida Ectoprocta Cnidaria Priapula Brachiopoda Ctenophora Loricifera* Echinodermata Platyhelminthes Cyliophora* Chaetognatha Nemertea Sipuncula Hemichordata Rotifera Echiura Chordata Gastrotricha Annelida Kinorhyncha Onychophora *
www.mun.ca /biology/pickavance/2122F04textforstudents.ppt   (626 words)

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