Susan was examining a cell under the microscope and noticed the formation of a cell plate in the midline of the cell and the formation of nuclei at opposite poles of the cell. The cell under examination was most likely a(n):_______.a) plant cell undergoing cytokinesis.b) plant cell in the anaphase stage.c) animal cell in the M phase of the cell cycle.d) animal cell undergoing cytokinesis.e) dividing bacterial cell.
Biology · High School · Thu Feb 04 2021
Answered on
A. plant cell undergoing cytokinesis
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.
Cytokinesis in plant cells involves the formation and insertion of a new cell wall that separates daughter nuclei after mitosis. The deposition of the new wall is regulated by a structure called the phragmoplast which contains microtubules, actin filaments and membranes.