平衡細胞

thumb|Root tip: 1. meristem 2. columella (statocytes with statoliths at the bottom of the cell) 3. side of the [[root cap 4. dead cells 5. cell elongation zone. Optical microscope 100x]] thumb|Statocyte: 1.cell wall 2.[[endoplasmic reticulum 3.plasmodesma 4.cell nucleus 5.mitochondrion 6.cytoplasm 7.statolith 8.root 9.columella 10.statocyte]] Statocytes are gravity-sensing (gravitropic) cells in higher plants. They contain amyloplasts-statoliths – starch-filled amyloplastic organelles – which sediment at the lowest part of the cells. In the roots, sedimentation of the statoliths towards the lo