Identify the stage of mitosis shown below:

In which phase of mitosis does a diploid cell become tetraploid?

Which of the following processes is not associated with prophase?

Choose the correct sentences for $telophase$.
$1.$ Chromosomes are arranged at the equator.
$2.$ Formation of nuclear membrane.
$3.$ At the end of this phase,nuclear membrane,Golgi complex,and endoplasmic reticulum are reformed.
$4.$ End of contraction of chromosome.
$5.$ This phase starts with chromosomes according to their vertical contraction.

The process of mitosis is divided into $4$ phases. Identify the correct order in which these phases appear in mitosis.

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