PHYLUM - PORIFERA


The trick is "SACH BOL".

 S stands for sponges.The members of kingdom porifera are known as sponges.

A stands for asymmetry , the members of this kingdom are asymmetric. 

C represents canal system , the unique feature of this kingdom is the presence of canal system. 

H stands for hermaphrodite . In sponges the sexes are not separate.

B implies body and O for ostia(minute pores) i.e sponges have ostia on their body walls through which water enters the body.

L stands for larval stage which is morphologically distinct from the adult.