"Endomitosis" refers to

$(1)$ Give scientific reason: Meiosis is called reductional division.
$(2)$ Give scientific reason: Mitosis is necessary for growth,development,and repair of the cell.

During cell division,sometimes there will be failure of separation of sister chromatids. This event is called

Match the following columns:

$I$. Interkinesis	$A$. Synapsis
$II$. Interphase	$B$. Formation of bipolar spindle
$III$. Zygotene	$C$. $DNA$ replication
$IV$. Diakinesis	$D$. Stage between two meiotic divisions

Which of the following options gives the correct sequence of events during mitosis?

Identify the correct statements:
$(i)$ Synapsis occurs between homologous chromosomes during Prophase-$I$ of meiosis.
$(ii)$ Centromere division occurs during Anaphase-$II$ of meiosis.
$(iii)$ Spindle fibers completely disappear during Telophase of mitosis.
$(iv)$ The nucleus reappears at the Telophase-$I$ stage of meiosis.