NEET BIOLOGY

Detailed explanation-1: -Cytokinesis occurs by a special mechanism in higher-plant cells-in which the cytoplasm is partitioned by the construction of a new cell wall, the cell plate, inside the cell. The position of the cell plate is determined by the position of a preprophase band of microtubules and actin filaments.

Detailed explanation-2: -In plant cells, Golgi vesicles coalesce at the former metaphase plate, forming a phragmoplast. A cell plate formed by the fusion of the vesicles of the phragmoplast grows from the center toward the cell walls, and the membranes of the vesicles fuse to form a plasma membrane that divides the cell in two.

Detailed explanation-3: -In animal cells, cytokinesis is accomplished via a cleavage furrow; a deep indentation around the equator of the cell. Underneath the cleavage furrow, a ring of actin filaments called the contractile ring is pulled smaller and smaller by the movement of myosin motor proteins.