During mitosis,the $ER$ and nucleolus begin to disappear during . . . . . . .

At the end of which phase is the number of chromosomes at each pole equal to the number of chromosomes in the parent cell?

Match the following:

Column-$I$	Column-$II$
$1$. Metaphase	$p$. Chromosomal material condensed
$2$. Prophase	$q$. Nucleolus reform
$3$. Anaphase	$r$. Spindle fibre attach to kinetochores
$4$. Telophase	$s$. Chromatids move to opposite poles

$A$ student observed a slide of mitosis under the microscope and noted that the chromosomes were positioned at the opposite poles. Which stage was the student observing?

Into how many stages is mitosis divided?

What is the metaphase plate?