Question

Assertion (A): Karyokinesis occurs in M-phase.

Reason (R): Cell division stops in M-phase.

Options

• Both A and R are true and R is the correct explanation of A.

• Both A and R are true but R is not the correct explanation of A.

• A is true but R is false.

• A is false but R is true.

Answer 1

A is true but R is false.

Explanation:

The assertion is true because karyokinesis (the division of the cell nucleus) takes place exclusively during the M-phase (Mitosis/Meiosis). However, the reason is false because cell division does not stop during the M-phase; rather, the M-phase is the most active period of physical cell division, where both the nucleus and the cytoplasm actively divide to form new daughter cells.