The cell cycle is a sequence of events that a cell goes through as it grows and divides. The cell cycle of eukaryotic organisms consists of following phases – G1, S, G2, and the cell division. The first phase represents the cell growth, while the DNA replication occurs in the S phase. In the G2 phase, the cell prepares itself for the process of division.
Mitosis consists of four phases (prophase, metaphase, anaphase, and telophase) after which the cell goes through cytokinesis. In prophase, each chromosome contains doubled DNA material which is arranged in two sister chromatids. In metaphase, chromosomes are aligned in the center of the cell. During anaphase, paired chromatids are divided and they move toward the opposite ends of the cell. In telophase and cytokinesis, this cell divides into two cells.

A. Chromosomes are replicated in interphase and separated in anaphase

The picture represents the process of cytokinesis in animal and plant cell.
Cytokinesis represents the division of the cytoplasm. It is the final stage of the M phase of cell cycle. However, this process differs among animal and plant cells. In animal cells, the cell membrane moves inward in order to split the cell in half. Plant cells have a rigid wall and a membrane which is not as flexible as the one in animal cells. Thus, the plant cells are characterized by the formation of the cell plate, which is a structure that forms in the place where the division of the cytoplasms should occur. The cell plate gradually develops into cell membranes, around which the cell wall is made. This is the way in which the cytoplasm of plant cells is divided.

D. Mitosis is complete and the plant cell is forming a cell plate because plants have cell walls

Cell differentiation is the process in which specialized cells are formed from totipotent cells.

B. The cells have differentiated to produce different cell types

If a cell would grow uncontrolled, at some point its organelles wouldn’t be able to fulfill its needs for survival. The larger a cell becomes, there are more requirements on its DNA molecule. The need for nutrients increases as well as the production of waste products, which causes problems in transporting these substances across the cell membrane. Therefore, at some point, the cell must divide.

E. If cells continue to grow without dividing they won’t be able to efficiently move nutrients across the cell membrane