In which phase do chromosomes separate and move towards opposite poles?

Select the correct statement regarding $S-$phase of interphase.
$I.$ Occurs between $G_1$ and $G_2$ phase.
$II.$ $DNA$ replication begins in the nucleus.
$III.$ Centrioles duplicate in the cytoplasm.
$IV.$ As $DNA$ is doubled,the number of chromosomes also doubles.

In which phase does the synthesis of proteins required for spindle fiber formation occur?

In higher plants,the bipolar spindle is formed from which of the following?

Which stage is represented by the given figure?

Label the diagram and also determine the stage at which this structure is visible.