In case of poriferans,the spongocoel is lined with flagellated cells called

Body having meshwork of cells,internal cavities lined with food filtering flagellated cells and indirect development are the characteristics of Phylum

Which animal group exhibits cellular level of organization despite being multicellular?

The cells in Porifera that are helpful in sexual reproduction are .........

What is the function of the water canal system in sponges?

$A$ metazoa without tissue organisation is called