Which of the following is not a stage of cell division?

Statement $P$: The phase between two successive meiotic divisions is called interkinesis.
Statement $Q$: The period between two successive cell divisions is called the cell cycle.

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

Compare the statements $A$ and $B$.
$Statement A$: Synthesis of $DNA$ takes place in the $S$-phase of interphase.
$Statement B$: Every chromosome,during metaphase,has two chromatids.
Choose the correct description.

Bacteria divide every $35$ minutes. If a culture containing $10^5$ cells $/ ml$ grows for $175$ minutes,what will be the cell concentration per $ml$ after $175$ minutes?

What is the number of chromatids in a chromosome during metaphase?