GENERAL HISTOLOGY

Detailed explanation-1: -Molluscs do not have a segmented body.

Detailed explanation-2: -Some of the qualities that define a mollusk are definite organs (mainly heart, gonads, and kidneys), a complete digestive tract, and a muscular foot. Although their bodies are not segmented, they do have two definable parts: the head and the foot. Their shells are made of calcium carbonate.

Detailed explanation-3: -The Mollusca are the aquatic animals. They have the soft unsegmented body that covered with the hard calcareous shell. They are triploblastic, bilaterally symmetrical, coelomate.

Detailed explanation-4: -Mollusca have bilateral symmetry and they have CaCO3 (calcareous) shell.

Detailed explanation-5: -Broadly, they are soft bodied animals that tend to be unsegmented, bilaterally symmetrical, with a coelom (a body cavity containing some key organs).