In this article we will discuss about the structure of polystomella. This will also help you to draw the structure and diagram of polystomella.
1. It is a marine protozoan common on sea shores.
2. Body enclosed in a many chambered shell and each chamber is perforated with numerous pores.
3. Chambers are arranged in a spiral fashion.
4. Ectoplasm gives rise to numerous thread like extensions-the reticulopodia, which project out of the pores.
5. Adults exhibit dimorphism and alternation of generation between a microspheric and a megalospheric form.
6. Microspheric form has small central chamber – the proloculum and many scattered nuclei. It reproduces only asexually i.e., through multiple fission.
7. The megalospheric form has large central chamber and only one nucleus. It reproduces only sexually i.e., through gametogamy and conjugation.
8. Nutrition holozoic.