Question

Cytokinesis is a division of:
A. Cytoplasm
B. Nucleus
C. Chromosome
D. Nucleolus

Answer 1

Hint: Cell cycle is a biological process, in which a single cell divides and produces daughter cells. Cell division is two types, Mitotic cell division, and Meiosis cell division. The daughter cells of mitotic cell division are diploid while the daughter cells of meiosis cell division are haploid. But the mother cell in both divisions is diploid.

Complete step by step answer: Cytokinesis is part of cell division in which cytoplasmic contain of cell divide, actually in that phase the division of the cytoplasm of a parental cell takes place, which means the cytoplasm of the mother cell divide into two daughter cells. It occurs simultaneously in both types of nuclear division called mitosis and meiosis. Mitosis and each of the two meiotic divisions results in two separate nuclei contained within a single cell. Cytokinesis performs a crucial role to separate the cell in half and ensure that one nucleus ends up in each daughter cell. A ring of protein filaments forms this protein ring filament is called the contractile ring this ring forms around the equator of the cell just below the plasma membrane. The contractile ring reduces at the equator of the cell, pinching the plasma membrane inward, and forming what is called a cleavage furrow. Eventually, the contractile ring reduces to the point that there are two separate cells each bound by its own plasma membrane. Hence, cytokinesis can be considered to occur in four stages initiation, contraction, membrane insertion, and completion.
The division of nucleus is the division of whole genetic material (chromosome and nucleolus).
As per the above discussion the correct option of this question is option A, means cytoplasm. The division of cytoplasm during cell division is called cytokinesis, and I hope you guys will make sure why options are incorrect.

Note: In both type of cell division, cytokinesis (division of cytoplasmic content) starts during the nuclear division phase called anaphase and continues through telophase, (the last phase of cell division) reaching completion as the next interphase begins.