Gravity-Sensing Mechanisms of Many Organisms are Based on ____

Question

Gravity-sensing mechanisms of many organisms are based on ____.  
A) spicules
B) statoliths
C) uric acid crystals
D) sclereids
E) nematocysts

Accepted Answer

Gravity-sensing mechanisms of many organisms such as plants and some animals are based on statoliths, which are specialized organelles or structures that respond to gravity by settling in a particular orientation.