After chromatid separation, the nuclear membrane separates into two nuclei, aided in part by the invagination of the membrane. This style is termed a closed mitosis accompanied by the formation of a cleavage furrow. Mitosis in Coleochaete Coleochaete is a prostrate alga , growing on other algae and submerged vascular plants. It is characterized by parenchymatous growth with erect setae. The plant is thought to represent a group of plants from which the modern day higher plant evolved.
Mitosis is termed to be open as the nuclear membrane disappears during mitosis.
Cytokinesis occurs in a manner also similar to that of higher plants in the presence of a cell plate that is formed by the activity of golgi vesicles formed as a phragmoplast. The main difference between mitotic division in Coleochaete and higher plants is the presence of centrioles in the former. The Order Zygnematales Members of this class are either unicellular or filamentous. There are no flagellated cells formed in either sexual or asexual reproduction. Cell division does involve centrioles, and hence the presence of potential flagellar bases indicates an algal affinity.