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Brachiopods, phylum Brachiopoda, are marine animals that have hard "valves" ( shells) on the ... However, new fossils found in 2007 and 2008 showed that the " chain mail" of tommot...

Campbell Biology: Chapter 33 Test Preparation Flashcards | Easy ...


8) The members of which clade in the phylum Cnidaria occur only as polyps? ... A ) mantle cavity ... 24) Which of the following is found only among annelids?

Molluscs and Annelids


... diverse, with 110,000 named species, second only to the arthropods among all phyla of animals. ... Is this the rudimentary beginning of the more elaborate coelom found in ... This shell is secreted by a thin sheet of tissue called the mantle, which ... Molluscs have an open circulatory system - only part of the blood flow is ....

The Wonders of the Seas: Mollusks - Oceanic Research Group


Among the Mollusks are some of the most well known of invertebrate sea creatures, ... Some of the giant clams found in the Pacific have symbiotic algae in their mantle tissue, and ... Nautiluses are the only Cephalopods with an external shell.

RNA-Seq in Mytilus galloprovincialis: comparative transcriptomics ...


Sep 24, 2015 ... Among the total 151,320 transcripts, 54.57 % were shared by all the ... were found only in the mantle, reinforcing the hypothesis that mantle ...

What is a Mollusk? - Encyclopedia of Life


The mantle also secretes the shell, in those mollusks that have one. ... Though the structure is shared among many species, its shape and features ... already found in remote habitats, like the deep sea, that we have as yet only barely sampled.

Indolent mantle cell leukemia: a clinicopathological variant ... - NCBI


Apr 20, 2011 ... BACKGROUND: Cases of mantle cell lymphoma with indolent behavior have ... Early studies found peripheral blood involvement to be an adverse ... cell lymphoma presenting only with lymphocytosis, among all mantle cell ...

The depth of mantle convection - Wiley Online Library


Jan 10, 1979 ... estimate crudely the temperature of the core-mantle boundary as 4000 + 500 ° K. The temperature ..... Although there is no unanimity among geochemists, ..... should be noted, however, that this layer is found only in some.

Mineralogic variability of the uppermost mantle along mid-ocean ...


mantle complementary to that found in the ridge ... Filled circles indicate localities for which we have modal data only while ..... station, while 1o is an estimate of the total variation of the mineral proportions among the samples from one station.

Nature and Evolution of the Lithospheric Mantle beneath the Hoggar ...


Mantle xenoliths have been found only in the western part of the Tahalgha district in ..... Among the HT wehrlites four samples (48, 48-4, 276-16, and 276-22) are ...

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a. trachea b. nephridium c. mantle d. parapods e. none of the - BIO ...


A mantle is found only among the a. arthropods b. annelids c. echinoderms d. mollusks e. chordates Section: 23.7 Bloom's: knowledge Ans: d 51. A radula is ...

What is Earth Made Of? - Space.com


Sep 26, 2012 ... Earth's layers consist of the crust, mantle and core. ... Earth is unique among the known planets: it has an abundance of water. ... have atmospheres, ice, and even oceans, but only Earth has the right combination to sustain life.

The mollusca - University of California Museum of Paleontology


Here the mantle covers much of the shell. Note how a portion of the mantle is rolled into a tube shape to form the siphon just above the head. At the right is a ...