Biology · Kingdom Animalia

Parazoa is a subkingdom of animals that includes sponges (phylum Porifera) and lacks specialized tissues and organs, unlike other animals. These organisms have a cellular level of organization, meaning their cells specialize but do not form true tissues or organs, a characteristic that has made them successful in various marine environments.

Parazoa, like sponges, are simple multicellular organisms.

Parazoa lack true symmetry, making this incorrect.

Parazoa do not have bilateral symmetry.

Some Parazoa exhibit asymmetry, but not all, making this option misleading.