what is peristomium describethe segment behind
What is peristomium. Describe?
The segment behind the prostomium in annelids which contains the oral opening. This segment like the prostomium isn't a true segment and has no setal hairs, which are characteristic of phylum.
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determine the meaning of prestressed concreteit is a type of concrete in which permanent internal stresses of a suitable nature magnitude and
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what is peristomium describethe segment behind the prostomium in annelids which contains the oral opening this segment like the prostomium isnt a
what is the significance of pharyngeal gill slitlateral opening in the wall of the pharynx which allows water to enter into the mouth and exit
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what is placoid scale elaborate in detailscales characteristic of cartilaginous fish formed from the dermis scale is anchored in that layer by a
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