NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Cell plate forms, dividing daughter cells
A
Cytokinesis in plant cells
B
Cytokinesis in animal cells
C
Either A or B
D
None of the above
Explanation: 

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: -Cytokinesis in plant cells is more complex than in animals, as it involves building a cell plate as the final step in generating two cells. The cell plate is built in the center of phragmoplast by fusion of Golgi-derived vesicles.

Detailed explanation-3: -What makes a cell plate? Vesicles filled with enzymes, structural proteins, and glucose molecules collect along the center of the cell during telophase and cytokinesis forming the cell plate. As vesicles fuse, the cell plate grows, building a cell wall.

Detailed explanation-4: -Instead of plant cells forming a cleavage furrow such as develops between animal daughter cells, a dividing structure known as the cell plate forms in the cytoplasm and grows into a new, doubled cell wall between plant daughter cells. It divides the cell into two daughter cells.

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