Substance W is a chemical that inhibits spindle formation during cell division. If a meristematic plant cell were exposed to substance W, which process will not be able to occur in that plant cell?

2

(a)

The second meiotic division is similar to mitosis as it results in the separation as it results in the separation of the sister chromatids. However, it also differs from mitosis. Explain how?

2

(a)

How would you analyse that the cell's entire energy is devoted to the process of division in the M-phase?

2

(a)

Colchicine is known to be the mitotic poison. How?

2

(a)

While examining mitotic stage in a tissue. One finds some cells with 16 chromosomes and some with 32 chromosomes. What possible reasons could you assign to this difference in chromosome number? Do you think that cells with 16 chromosomes number could have arisen from cells with 32 chromosomes or vice-versa?

2

(a)