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Echinoderms

Echinoderm

(Science: zoology) One of the echinodermata.


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Please check my work?

Ok im literally bio retarded so don't laugh at me k thanks :* Which of the following are three common characteristics of echinoderms? A tube feet, circulatory system, body symmetry B marine-dwellers, endoskeletons, water-vascular system C bilateral symmetry, ossicles, respiratory system ...

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by radicali
Thu Jun 14, 2012 8:57 pm
 
Forum: General Discussion
Topic: Please check my work?
Replies: 1
Views: 2875

Quantified similarity between starfish and human DNA

I remember my BIO textbook for non-bio majors saying something about Human and Starfish (or maybe echinoderms generally) DNA being very similar. Some web searches turn up recent, short news articles that talk about "surprising similarities," with no quantification. ...

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by KSA
Sun Oct 10, 2010 7:11 pm
 
Forum: Genetics
Topic: Quantified similarity between starfish and human DNA
Replies: 2
Views: 6981

Re: Evolution of sexual reproduction

... basic animal body plans are cnidarians (corals and jellyfish), mollusks (squids and shellfish), arthropods (crustaceans, insects, and trilobites), echinoderms (sea star and sea urchins), and the chordates (animals with backbones), the phylum to which all vertebrates including humans belong. Recent ...

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by jevg
Tue Aug 24, 2010 7:21 pm
 
Forum: Evolution
Topic: Evolution of sexual reproduction
Replies: 29
Views: 33014

Global Warming and Ocean Environmental Changes

... of the Royal Society B, the author, Hannah L. Wood states, “Species with calcium carbonate skeletons, such as mollusks, crustaceans and echinoderms, are particularly susceptible to ocean acidification. As pH decreases, so too does carbonate availability that has led some authors to conclude ...

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by nylecar
Tue Oct 20, 2009 12:18 pm
 
Forum: Ecology
Topic: Global Environmental Change
Replies: 68
Views: 99102

Why do you keep talking about species

... cilia about 100 modern species Cycliophora Wheel carrying Symbion Circular mouth surrounded by small cilia at least 3 Echinodermata Spiny skin Echinoderms Five-fold radial symmetry in living forms, mesodermal calcified spines about 7,000 extant and 13,000 extinct species Echiura Spine tail ...

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by gamila
Mon Jun 29, 2009 5:35 pm
 
Forum: Evolution
Topic: Why do you keep talking about species
Replies: 23
Views: 50252
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