Failure of cytokinesis after $A$ stage of cell division results in an increase in a whole set of chromosomes in an organism called $B$.

Choose the correct sequence of two main events in mitosis. Karyokinesis is followed by:

Phragmoplast is the precursor of

$A$ student observed a plant cell from a field in the telophase stage. He informed his teacher that the cell appeared different from other cells in telophase. The formation of the cell plate was not observed. Consequently,the cell contained a higher number of chromosomes compared to other dividing cells. This phenomenon results in $..........$.

In mitosis,karyokinesis is usually followed by cytokinesis,but this is not always the case. If a cell undergoes mitosis but cytokinesis does not occur,what is the result?

Phragmoplast is formed by the Golgi complex and grows: