True or False: All animals are multicellular eukaryotes. 

True or False: The influenza virus causes “stomach flu”. 

Sponges are outliers in the animal kingdom in that their bodies are not composed of _________.

Which of the following is a threat to ecosystems and biodiversity?

True or False: Sponges are parazoans.

Which are true of cnidarians? 

Which of the following is associated with cephalization?

_____________ are invertebrates with jointed appendages with an external skeleton (exoskeleton).

Which of the following is a characteristics of lake and pond biomes? 

True or False: Acoelomates do not have an internal body cavity.