Question

How is pores or holes present all over the body of poriferans important?

• A. The pores or holes present all over the body of the poriferans lead to a canal system that helps in circulating water throughout the body to bring in food and oxygen
• B. The pores or holes present all over the body of the poriferans lead to a endocrine system that helps in circulating water throughout the body to bring in food and oxygen
• C. The pores or holes present all over the body are just for beautification
• D. Both A and B

Answer 1

The correct option is A The pores or holes present all over the body of the poriferans lead to a canal system that helps in circulating water throughout the body to bring in food and oxygen

Sponges belong to phylum Porifera because they have perforated body and water transport or canal system. Water enters through minute pores (ostia) in the body wall into a central cavity, spongocoel, from where it goes out through the osculum. This pathway of water transport is helpful in food gathering, respiratory exchange, and removal of waste. Perforations are due to ostia in the body of sponges.

So, the correct answer is option A.