What does protostoma mean?
Protostoma means (embryology, obsolete) Synonym of blastopore..
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Pronunciation varies by accent · noun
(embryology, obsolete) Synonym of blastopore..
It is frequently stated by critics of the protostoma hypothesis that it involves a reversal of dorsal and ventral sides during the evolution of Vertebrates from their invertebrate ancestors but it will be gathered from what has been said that this criticism rests on a misunderstanding.
The opening of this, the protostoma, becomes elongated, taking on an elliptical shape, and then it narrows in the middle, its outline becoming that of a dumb-bell.
The protostoma with its wall—the protorhabdion—is the major part of the stoma.
Conventionally, the stoma is divided into three parts: the anterior chamber or cheilostoma, the middle or protostoma, and the posterior or telostoma.
Use protostoma when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Protostoma means (embryology, obsolete) Synonym of blastopore..
Common synonyms include blastopore.
The opposite depends on the specific sense.
It is frequently stated by critics of the protostoma hypothesis that it involves a reversal of dorsal and ventral sides during the evolution of Vertebrates from their invertebrate ancestors but it will be gathered from what has been said that this criticism rests on a misunderstanding.
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