AP BIOLOGY

Detailed explanation-1: -So, the correct answer is ‘Centriole’.

Detailed explanation-2: -In plant cells, a cleavage furrow is not possible because of the rigid cell walls surrounding the plasma membrane. A new cell wall must form between the daughter cells.

Detailed explanation-3: -Final answer: Centrosomes are not present in plant cells.

Detailed explanation-4: -Since the rigid cell walls of plants cannot be pulled inwards thus cleavage is not possible in plant cells. As a consequence, in the plant cells, cytokinesis begins roughly halfway between daughter nuclei with the formation of a cell plate in the cytoplasm.

Detailed explanation-5: -The cleavage furrow in animal cells and the phragmoplast in plant cells are complex structures made up of microtubules and microfilaments that aide in the final separation of the cells into two identical daughter cells.