Home » Biology mcqs » The skeleton of sponges is made up of___________?The skeleton of sponges is made up of___________? by A. Calcium B. Silica C. Both of these D. None of these Related Posts:Inner layers of the sponges are made up of__________?80% of the food of sponges consists of__________?In sponges fertilization takes place in____________?Sperms released in water are carried to the…Ribose is an example of___________?Platyhelminthes excretory system consists of___________?
