What specialized structure do crustaceans use to sense gravity?

A) antennae
B) maxillae
C) mandibles
D) statocysts
E) swimmerets

Statocysts

Sensory organs found in invertebrates that help in detecting gravity and spatial orientation.

Crustaceans

A diverse group of aquatic animals within the arthropod phylum including crabs, lobsters, crayfish, shrimp, and barnacles, characterized by a hard exoskeleton and jointed limbs.

Gravity

The natural force of attraction exerted by a celestial body (such as Earth) on objects that are on or near its surface, drawing them toward the center of the body.