Ultrastructure of ovotestis of young and adult pulmonate mollusk, Macrochlamys indica Benson, 1832

Functions of the periacinar cell and interacinar cell are discussed. It is found that the spermatogenesis is highly active in younger snails with single dormant oocyte while process of oogenesis predominates in the older snails. The reproductive strategy of this pulmonate species thus depends on the individual's body size and their maturity.