Is a caterpillar a mullusc

No, a caterpillar is not a mollusc; it is the larval stage of an insect, specifically a butterfly or moth. Molluscs are a separate group of invertebrates that include animals like snails, clams, and octopuses. Caterpillars belong to the phylum Arthropoda, while molluscs belong to the phylum Mollusca. Thus, they are distinct groups with different characteristics and classifications.