An Earthworm Without a Statocyst Would Not Be Able To

Question

An earthworm without a statocyst would not be able to
A)move.
B)sense light.
C)hear.
D)orient with respect to gravity.
E)respond to touch.

Accepted Answer

The statocyst is an organ in invertebrates that helps them orient with respect to gravity. It contains sensory hairs and small stones that move as the animal moves. The movement of these stones helps the animal sense its orientation in space. Without a statocyst, the earthworm would not be able to sense which direction is up or down and therefore would not be able to orient itself properly for movement.