Studies on The Morphology and Ultrastructure of Meretrix meretrix Linnaeus

This paper deals with the studies on the morphology and anatomy of Meretrix meretrix Linnaeus.The paper composed of two parts:the characters for external morphology and internal anatomy.Its living environment,food habits and growth are also described.The digestive system and reproductive system are studied by transmission electron microscope.The cells of the stomach wall contain numerous mitochondria.