Q. In which of the following there is syncytial epidermis and longitudinal muscle cells are in four bands ?

 1804  208 BHUBHU 2003 Report Error

Solution:

Body wall of mẹmbers of phylum nematodes consist of cuticle, epidermis and muscular layer. The epidermis may be cellular or syncytial.
Syncytial epidermis is a continuous layer of cytoplasm with scattered nuclei without cell membrane. So, syncytial epidermis and four bands of longitudinal muscle cells occurs in nematodes.
Body wall of annelids consist of cuticle, epidermis, circular and longitudinal muscles layer.
Body wall of flat worms (members of phylum Platyhelminthes) consist of cuticle and muscle layers.