A.Insects
B.Cnidarians
C.Molluscs
D.All of these
Related Mcqs:
- Radial symunetry is found in:
- Animal which respires but has no respiratory organs is:
- Both crocodiles and alligators have respiratory organs to breath in:
- Coelon is divided into septa in case of:
- Soft body enclosed in a hard calcareous shell is found in:
- A cavity outside body called mantle cavity is found in:
- Porocytes are specialized cells found exclusively in:
- Excretory organs are totally absent in:
- Ventral nerve cord is absent in which of these:
- Choanocytes are characteristic cells of:
