Which of the following are primarily responsible for cytokinesis in plant cells but not in animal cells?
A) kinetochores
B) Golgi-derived vesicles
C) actin and myosin
D) centrioles and centromeres
E) tubulin and dynein

Question

Quizplus · Accepted Answer

In plant cells, Golgi-derived vesicles play a crucial role in cytokinesis by carrying cell wall components to the cell plate, which eventually becomes the new cell wall. Animal cells do not have a cell wall, so this mechanism is not present in their cytokinesis process. Kinetochores (A) are responsible for attaching to spindle fibers during mitosis and are not directly involved in cytokinesis. Actin and myosin (C) are primarily responsible for cytokinesis in animal cells, but they also play a role in plant cell cytokinesis. Centrioles and centromeres (D) are not directly involved in cytokinesis but are important for spindle formation in mitosis. Tubulin and dynein (E) are involved in microtubule formation and movement in both animal and plant cells and are not directly responsible for cytokinesis. Therefore, the best choice is B, as it is a mechanism unique to plant cell cytokinesis.

Which of the Following Are Primarily Responsible for Cytokinesis in Plant