Genuine bath sponges are the skeletons of marine sponges, and are composed of which of the following?Multiple choice question.Calcium carbonateSpiculesSilicaSpongin

Which of the following is NOT a characteristic of sponges (Phyla Calcarea and Silicea)?a) They lack true tissues and organs.b) They are sedentary suspension feeders.c) They are diploblastic.d) They contain flagellated collar cells called choanocytes

The pores in the body of a sponge, through which water is drawn in, are known as which of the following?Multiple choice question.ChoanocytesSpiculesOstiaOscula

Sponges live in ______ habitats and belong to the phylum ______, which means "pore-bearing."Multiple choice question.aquatic; Cnidariaaquatic; Poriferaterrestrial and aquatic; Echinodermataterrestrial; Cnidaria

Sponges are most accurately described asa) marine predators.b) marine filter feeders.c) freshwater scavengers.d) aquatic filter feeders

The tough skeletal fibers and spicules that support the body of a sponge are formed by what type of cells?Multiple choice question.CnidocytesChoanocytesAmoeboid cellsEpithelial cells