In Mollusca, eye is present over a stalk, called

Step-by-step solution

In Mollusca, each eye is located upon a stumpy peduncle called ommatophore. In Mollusca, a loose skin fold, called mantle, dorsally covers most of the body and encloses a large mantle cavity. The mantle cavity contains the rectum, genital duct, a penis in males and a small bipectinate chemoreceptor called osphradium. In Mollusca, the large oval aperture or mouth of the shell can be tightly closed by a thick, plate-like operculum attached to the foot.