A soft-bodied animal with no backbone, typically with a calcium-based shell such as clams, snails, and slugs, is described by which term?

A soft-bodied animal with no backbone, typically with a calcium-based shell such as clams, snails, and slugs, is described by which term?

• A. Mollusk
• B. Mite
• C. Insect
• D. Disease

Answer: (A)

This describes a mollusk. Mollusks are soft-bodied invertebrates, many with a calcium-based shell, and they include animals like clams and snails (and slugs, which are gastropods). They lack a backbone and typically have a mantle that secretes the shell, a visceral mass, and a muscular foot used for movement. Mites are arachnids, insects are six-legged arthropods, and disease is not an animal, so mollusk is the best fit for the description.

This describes a mollusk. Mollusks are soft-bodied invertebrates, many with a calcium-based shell, and they include animals like clams and snails (and slugs, which are gastropods). They lack a backbone and typically have a mantle that secretes the shell, a visceral mass, and a muscular foot used for movement. Mites are arachnids, insects are six-legged arthropods, and disease is not an animal, so mollusk is the best fit for the description.