Which is the direct or primitive type of cell division?

$X$-bodies were discovered by:

Observe the diagrams carefully and identify the different stages of mitosis $(A-C)$ by choosing the appropriate options given below.

$A$ bacterium divides every $35$ minutes. If a culture containing $10^5$ cells per $ml$ is grown for $175$ minutes,what will be the cell concentration per $ml$ after $175$ minutes?

In plant cells,the number of Golgi bodies increases during:

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.