Q12.2-2CC. - Campbell Biology

Question

Compare cytokinesis in animal cells and plant cells.

Step-by-Step Solution

Answer

In plants, cytokinesis takes place by the cell plate method, while in animals, it occurs by cell cleavage. The new cell membrane is usually derived from the Golgi Body in the case of plant cytokinesis, while in animals, it is derived from the endoplasmic reticulum.

Cell plates develop centrifugally while cleavage of the cell occurs centripetally.

Step 1: Cytokinesis

Cytokinesis is the division of one cell into two daughter cells. This process occurs after the telophase. Splitting of the cell occurs by different methods in plants and animals. Each of the cells produced as the product has its nuclei. Spermatogenesis is an example of cytokinesis.

Step 2: Cell plate formation in plant cell

The presence of a cell plate is an important feature in the cell division of plant cells; It is present in the middle of the dividing cell that separates the nuclei. Each of the new cells has a new membrane.

Step 3: Cell-furrow formation in animal cell

In animal cells, the cell membrane enfolds between the two nuclei. Contractile rings support developing the cleavage or cell furrow; therefore, the cell divides into two daughter cells.