GED Science Practice

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What is an invertebrate having a soft unsegmented body usually enclosed in a shell called?

Molting
Nerve
Mollusk
Nova

The correct answer is: Mollusk

An invertebrate with a soft, unsegmented body that is typically encased in a shell is classified as a mollusk. Mollusks are a diverse group of animals that include creatures such as snails, clams, and octopuses. The presence of a soft body often leads to the development of a protective shell, which serves as a safeguard against predators and environmental hazards. Mollusks exhibit a range of adaptations that allow them to thrive in various environments, further highlighting their evolutionary significance in the animal kingdom. The term "molting" refers to the process some animals undergo to shed their exoskeleton, which is not relevant to the characteristics of mollusks. "Nerve" pertains to the nervous system, which is important in many animals but does not define the organism's body structure. "Nova," while a term associated with astronomy, has no connection to invertebrates or their physical traits.