Cell division is initiated by

In which of the following cells is the cell cycle completed in $90$ minutes?

Which of the following statements are correct for $G_{1}$-phase?
$I.$ It is the last substage of interphase
$II.$ Cell organelles do not increase in number
$III.$ Cell grows in size and content both
$IV.$ It synthesizes $RNAs$,proteins and other biochemicals for cell growth and subsequent replication of $DNA$
Choose the correct option

Which of the following statements is incorrect?

Which of the following phases of the cell cycle is also known as the resting phase?

Which phase of the cell cycle is characterized by $DNA$ replication,synthesis of histones,and the formation of new nucleosomes?