Question

Canal system of porifera is not connected with

• A. Nutrition
• B. Sexual reproduction
• C. Respiration
• D. None of the above

Answer 1

The correct option is D None of the above

A. Sponges are holozoic organisms and do not have a digestive system. The food particles are directly ingested with the help of choanocytes present in the flagellated chambers of the canal system.

B. In sponges. sexual reproduction takes place through the participation of sperm and ovum. These sex cells are either formed from the archaeocytes or from the choanocytes present in the canal system.

C. Since there is a continuous flow of water because of the canal system, the gaseous exchange takes place between cells of sponges and the flowing water.

Hence, all the options are the functions of the canal system.