1.

The middle layer in body wall of porifera is or The non-cellular layer present between pinacoderm and choanoderm in body wall of poriferans is known asA. MesodermB. MesenchymeC. MesogloeaD. Mesentery

Answer» Correct Answer - B
(b) In porifera, bodywall is with outer pinacoderm (ectoderm) inner choanoderm (endoderm) and gelatinous noncellular mesenchyme in between.


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