In the cell cycle,during which phase are chromosomes arranged at the equatorial plate?

What is observed in chromosomes at the end of prophase?

Which of the following effects is produced by colchicine?

Which of the following statements is correct?

In mitosis, at which stage do the sister chromatids separate?

Read the following statements:
$(a)$ Complete disintegration of the nuclear envelope marks the start of the second phase of mitosis.
$(b)$ Metaphase chromosome is made up of one sister chromatid.