Question

The stage at which cytokinesis begins in plant cells is
A. Anaphase
B. Telophase
C. Go phase
D. Interphase

Answer 1

Hint:- The cytoplasm of the parent cell divides equally into daughter cells through the cytokinesis process during cell division after karyokinesis. Cytokinesis takes place through the forming of a furrow in an animal cell, while phragmoplast, which further grows into the cell wall, takes place in plant cells.

Complete step-by-step solution:-
Plant cells can't form furrows because of their rigid cell walls. Instead, in the place of the old metaphase plate separating the two forming cells, a cell plate forms across the cell during telophase. During telophase, Golgi apparatus-derived membrane-enclosed vesicles migrate to the centre of the cell where the metaphase plate used to be and fuse to form a cell plate. So, with the existing plasma membrane, the expanding cell plate fuses, forming two daughter cells, each with its own plasma membrane. It is the duty of the cell wall to help give plants their shape and must be formed when a cell divides.
The correct answer is, therefore, option B.

Additional information:-
Telophase is the fifth and final mitosis step, the mechanism that divides the duplicated genetic material carried into two identical daughter cells in the nucleus of a parent cell. When the replicated, paired chromosomes have been removed and pushed to opposite sides, or poles, of the cell, telophase starts. A nuclear membrane forms around each set of chromosomes during the telophase, to separate the nuclear DNA from the cytoplasm. The chromosomes, which make them diffuse and less rigid, start to uncoil. The cell undergoes a process called cytokinesis, along with telophase, which divides the parental cell cytoplasm into two daughter cells.

Note:- The nuclear envelope reforms on the surface of separated sister chromatids during the telophase, which usually cluster near the spindle poles in a dense mass.