Which of the following is not a difference between cytokinesis in animal and plant cells?
Formation of cleavage furrow
Formation of contractile ring
Presence of a rigid cell wall
Formation of cell plate
Both animal and plant cells undergo cytokinesis, but the mechanisms of division are different due to the presence or absence of a cell wall. Animal cells divide by forming a cleavage furrow, which is created by a contractile ring made of actin filaments. In contrast, plant cells form a new cell wall through the formation of a phragmoplast and cell plate. The presence or absence of a rigid cell wall is a significant difference between cytokinesis in animal and plant cells. However, both animal and plant cells require the use of microtubules to position the spindle fibers and ensure the successful separation of daughter cells. Therefore, option B) is the correct answer as the formation of a contractile ring is a specific mechanism unique to cytokinesis in animal cells.
Option 2 is the correct answer,