how would u know if the spicules of a spnge or calcerious or siliceous? Also, what environmental consideration might have an influence on whether a sponge is or flattened? Is there any relatnsiohp between the funcion of the spicules and behavirol responses? what characteristics are important in the “building” of a large sponge and why. I know that ascon makes sycon makes leucon..but thats all i know..