Question

Which of the following is a method of cytokinesis in a plant cell?

• A. By cell plate formation
• B. By constriction
• C. By phragmoplast
• D. Both A and C

Answer 1

Answer: (D)

Both A and C

Cytokinesis involves the division of the cytoplasm. It follows the karyokinesis. In the animal cell, the cytokinesis takes place by furrow formation while in plant cell construct a cell plate in the middle of the cell. The stages of cell plate formation include:

(1) Creation of the phragmoplast, an array of microtubules that guides and supports the formation of the cell plate.

(2) Trafficking of vesicles to the division plane and their fusion to generate a tubular-vesicular network.

(3) Continued fusion of membrane tubules and their transformation into membrane sheets upon the deposition of callose, followed by deposition of cellulose and other cell wall components.

(4) Recycling of excess membrane and other material from the cell plate.

(5) Fusion with the parental cell wall.

So, the correct answer is option D.