What are the sensory structures that enable invertebrates to determine the orientation of the body with respect to gravity called?

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Quizplus · Accepted Answer

Statocysts are sensory structures that enable invertebrates to determine the orientation of the body with respect to gravity. They are typically located in the head or foot of the animal and contain a fluid-filled cavity with a small, dense object called a statolith. When the animal moves, the statolith moves within the fluid, stimulating sensory cells that send signals to the brain. The brain then uses these signals to determine the animal's orientation and make appropriate adjustments.

What Are the Sensory Structures That Enable Invertebrates to Determine