Cell-plate is formed of smaller units called .................

Sure, here are step-by-step solutions for understanding phragmoplasts: 1. Definition: Phragmoplasts are structures that form during cell division in plant cells. They are made up of microtubules and actin filaments and are responsible for guiding the formation of the cell plate. 2. Formation: Phragmoplasts form during the late stages of cell division, after the chromosomes have separated and the nucleus has divided. They begin to assemble at the center of the cell, where the new cell wall will eventually form. 3. Microtubules: The microtubules in the phragmoplasts are responsible for guiding the vesicles that carry cell wall materials to the center of the cell. They also help to organize the cell plate and ensure that it forms in the correct place. 4. Actin filaments: The actin filaments in the phragmoplasts help to anchor the microtubules and provide additional support for the developing cell plate. 5. Cell plate formation: As the vesicles carrying cell wall materials arrive at the center of the cell, they begin to fuse together to form the cell plate. The phragmoplasts help to guide this process and ensure that the cell plate forms in the correct place. 6. Completion: Once the cell plate is fully formed, the phragmoplasts begin to disassemble and the new cell wall begins to form around the outside of the cell plate. 7. Function: Phragmoplasts are essential for the formation of new plant cells. Without them, the cell plate would not form correctly and the new cells would not be able to divide and grow properly. Overall, phragmoplasts play a critical role in plant cell division and growth, and understanding their structure and function is important for students studying biology and plant science.