Sponges Section 26–2 This section explains what a sponge is. It also describes how sponges carry out essential functions.
Review the Animal Kingdom 4 Major Characteristics? Multicellular Eukaryotic Heterotrophs Cells lack cell walls.
Three Phyla of Worms. Review the Animal Kingdom 4 Major Characteristics? Multicellular Eukaryotic Heterotrophs Cells lack cell walls.
