Question

which of the following molecules or structures are primarily responsible for cytokinesis in plant cells but not in animal cells?
actin and myosin
centrioles and centromeres
tubulin and dynein
golgi - derived vesicles
spot desmosomes

Explanation:

• Actin and myosin are involved in animal cell cytokinesis (contractile ring formation).
• Centrioles are mainly in animal cells (not key for plant cytokinesis).
• Tubulin and dynein are more related to microtubule - based movements (not specific to plant cytokinesis).
• Spot desmosomes are cell - cell adhesion structures (not for cytokinesis).
• In plant cells, Golgi - derived vesicles fuse to form a cell plate (essential for cytokinesis), which is not a mechanism in animal cells.

Answer:

Golgi - derived vesicles