Consider the following statements
(1) In plant cells, cytokinesis starts with the formation of phragmoplasts
(2) Phragmoplast comprises interzonal microtubules and Golgian vesicles
(3) Primary cell wall is produced by microtubules
(4) Phragmoplasts are formed from the nucleus

Options

A. 1, 2 and 3 are correct
B. 1 and 2 are correct
C. 2 and 4 are correct
D. 1 and 3 are correct

Answer

To analyze the statements regarding cytokinesis in plant cells, let's evaluate each statement one by one:

### Step-by-Step Solution:

1. **Statement 1: In plant cells, cytokinesis starts with the formation of phragmoplast.**
- **Analysis:** This statement is correct. In plant cells, cytokinesis involves the formation of a structure called the phragmoplast, which is essential for dividing the cytoplasm and forming the cell plate between the two daughter cells.

2. **Statement 2: Phragmoplast comprises interzonal microtubules and Golgian vesicles.**
- **Analysis:** This statement is also correct. The phragmoplast is made up of microtubules that help in guiding the Golgi-derived vesicles to the center of the cell, where they fuse to form the cell plate.

3. **Statement 3: Primary cell wall is produced by microtubules.**
- **Analysis:** This statement is correct as well. Microtubules play a crucial role in the organization and deposition of cellulose fibers that make up the primary cell wall, which is important for cell structure and expansion.

4. **Statement 4: Phragmoplasts are formed from the nucleus.**
- **Analysis:** This statement is incorrect. Phragmoplasts are not formed from the nucleus; they are formed from the Golgi apparatus, which provides the necessary vesicles for cell plate formation during cytokinesis.

### Conclusion:
- **Correct Statements:** 1, 2, and 3 are correct.
- **Incorrect Statement:** 4 is incorrect.

### Final Answer:
The correct answer is that statements 1, 2, and 3 are correct, while statement 4 is incorrect.

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