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Difference in Phylums?

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Difference in Phylums?

Postby LiL Homie » Wed Feb 07, 2007 12:07 am

What are 2 distinctive features that makes the Arthropod phylum different from Annelids,Mollusks, Roundworms,Sponges, Cnidarians, & Flatworms?

*Exoskeletons & a Coelom?

I would appreciate any help. Thanks!
Last edited by LiL Homie on Wed Feb 07, 2007 6:21 pm, edited 1 time in total.
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Postby kjle » Wed Feb 07, 2007 5:45 am

Come on, that's not a tough question. Look in your textbook or google it.
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Postby Dr.Stein » Wed Feb 07, 2007 7:51 am

To answer that, you should understands each characteristics, or at least their special character(s) which cannot find in another ones.

Please write here, then we will guide you further ;)
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Postby satrohraj » Thu Feb 15, 2007 4:58 pm

There are many..

1. Exoskeleton
2. jointed legs
3. Tracheal respiration
4. Wide Range of habitats (air+water+land)
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Postby xand_3r » Thu Mar 08, 2007 10:40 am

Other differences include blood composition : annelids have free hemoglobin in their blood, arthropods don't have any pigment in their blood since they have tracheal respiration and the others have hemocyanine as respiratory pigment (also circulating free in the blood).
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