The answer is False.
Mollusks are not pseudocoelomates; they are classified as coelomates. Coelomates are animals that possess a true coelom, which is a body cavity completely lined by mesoderm. Mollusks, such as snails, clams, and octopuses, have a well-developed body structure that includes a coelomic cavity, allowing for more complex organ development and greater flexibility in movement.
Pseudocoelomates, on the other hand, have a body cavity that is only partially lined with mesoderm, which is characteristic of some other groups of animals like roundworms (nematodes). Understanding these classifications helps in studying the diversity of life and evolutionary biology.