Question

the flow of sea water through the canal system of sponges is show in a flow chart fill the gaps marked a and b sea water-->a-->spongocoel-->b-->outside

Answer 1

Spongocoel is the answer

Answer 2

Answer:

a- Ostia

b- Osculum

explaination:

Water enters the body of sponges through ostia and reaches spongocoel. From spongocoel, water flows out of body to the exterior through osculum. Hence, in canal system of porifera, the pathway of water flow is :  Ostia, Spongocoel, Osculum, Exterior

HOPE IT HELPS