AP BIOLOGY

Detailed explanation-1: -In order obtain food, sponges pass water through their bodies in a process known as filter-feeding. Water is drawn into the sponge through tiny holes called incurrent pores.

Detailed explanation-2: -Sponges must pump water through their bodies in order to eat. Because sponges are sessile, meaning they cannot move, they filter water to obtain their food. They are, therefore, known as filter feeders.

Detailed explanation-3: -Feeding and digestion The Porifera are primarily filter feeders, utilizing food particles suspended in the water and captured by the choanocytes. Food particles consist essentially of bacteria, other microorganisms, and particles of organic debris; sponges also probably absorb dissolved organic substances.

Detailed explanation-4: -Sponges are a type of suspension feeder, but because they actively pump water through their bodies, they are more specifically called filter feeders. Other examples of filter feeders include clams and mussels.