What is cytoplasmic streaming ? How many types of streaming are there?

The autonomic movement of the matrix of cytoplasm of eukaryotic cells is called cytoplasmic or protoplasmic streaming or cyclosis. These are of two types: (a) Rotation, (b) Circulation. In rotation, the cytoplasmic matrix moves in one direction around a central vacuole. In circulation, the matrix moves in different directions around different vacuoles of the cell.