The point of attachment of microtubules on the chromosome is called as

At the end of prophase, which of the following structures disperses throughout the cell?

At the end of which phase do the nuclear envelope and nucleolus disappear?

In which stage can chromosomes be clearly observed under a microscope?

Select the correct option on the basis of the following events:
$(I)$ Chromosomes cluster at opposite spindle poles.
$(II)$ Nuclear envelope assembles around the chromosome clusters.
$(III)$ Golgi complex and $ER$ reform.

The condensation of chromatin material starts in which phase of the cell cycle?