In some plant cells there is a rapid rotatory cytoplasmic movement, limited to the peripheral parts of the cell next to the cell wall, which carries chloroplasts and granules along. This movement may be increased by light, and is dependent on temperature and pH. Auxins, or plant growth hormones, may also increase the rate of movement. In some protozoans, such as the ciliates, slower cyclotic movements transport digestive vacuoles through the cell body.
Related category• CELL BIOLOGY
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