The phycoplast is a microtubule structure observed during cytokinesis in members of the Chlorophyceae, the largest class of green algae. Cytokinesis in green algae occurs via a diverse range of mechanisms, including cleavage furrows in some algae and cell plates in others. Some green algae of the class Charophyceae use phragmoplasts similar to those in embryophytes to organize and guide the growing cell plate. In these algae, the microtubules of the telophase spindle give rise to the phragmopla… (More on Phycoplast)