Question
Biology Question on Kingdom Animalia
In Mollusca, eye is present over a stalk, called :
A
ostractum
B
operculum
C
ommatophores
D
osphradium
Answer
ommatophores
Explanation
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.