Question

In animal cells, the actin cytoskeleton forms a cleavage furrow to physically separate the cellular contents during cytokinesis. Explain why this approach won't work in plant cells, and describe how they do it instead.

Answer 1

Answer:

The approach of cytokinesis to form cleavage furrows does not work for the plant cells due to specific reasons. These reasons are -

The presence of a rigid outermost layer called cell wall in plant cells that do not allow for forming furrows.

Centrioles present in animal cells helps in maintaining the organisation of mitotic spindle and completion of cytokinesis, however, not found in plant cells. The Golgi vesicles secrets and makes a septum or cell plate in the equatorial plane of the cell wall with the help of microtubules and phragmoplast help in the separation of two daughter cells.

Answer 2

The process of cytokinesis to form cleavage furrows does not function for the plant cells due to the following reasons :

• The existence of a tough extreme layer called cell wall in plant cells that do not allow for forming furrows.
• Centrioles present in animal cells help in supporting the organisation of mitotic spindle and completion of cytokinesis, however, not found in plant cells.

What is a cleavage furrow It is formed when animal cells separate?

Cleavage furrow is a constriction formed by the actin ring during animal-cell cytokinesis that leads to cytoplasmic division. cytokinesis is the division of the cytoplasm the following mitosis to form two daughter cells.

Thus, the presence of cell walls and the absence of centrioles are the reason.

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