The correct option is (D) Dorsal plates
Chitons have with eight-part overlapping scale shells.
The phylum Mollusca contains four main groups:
1. Chitons, molluscs that resemble snails and have scale shells that overlap in eight parts, make up the class Polyplacophora.
2. True snails and slugs belong to the class Gastropoda. They comprise the Molluscan phylum's most diverse class, with 60,000–80,000 extant species found in freshwater, marine, and terrestrial habitats.
3. Molluscs of the class Bivalvia have two-part shells that are joined. Clams, oysters, mussels, and scallops are a few examples.
4. Molluscs of the class Cephalopoda have broad heads, huge eyes, and gripping tentacles. Octopus, squid, cuttlefish, and nautiloids are a few examples.
Learn more about the Mollusca with the help of the given link:
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