Which of the following characteristics is incorrect about the given animals?

Options

A. Only animals X and Y can retract their bodies into their shells when disturbed
B. Shells of animals X and Y are single unit structure while of animal Z has one made of multiple units.
C. All of these animals are aquatic animals.
D. All of these

Answer

D

Explanation

The given organisms are snail (X), turtle (Y) and armadillo (Z). Snail can be aquatic or terrestrial, turtles are aquatic while armadillos are terrestrial animals. Snails and turtles can retract their bodies into the shells when disturbed. On the other hand, armadillos have an armour of bony plates on their bodies. When disturbed they roll into a ball like structure with the bony plates forming a protective cover.