Haploid plant cultures are got from

Options

A. leaves
B. root tip
C. pollen grain
D. buds

Explanation

**Step-by-Step Solution:**

1. **Understanding Haploid Cells**:
- Haploid cells are those that contain half the number of chromosomes compared to diploid cells. In plants, haploid cells are produced through meiosis, which is the type of cell division that generates gametes.

2. **Identifying the Source of Haploid Cells**:
- The question asks where haploid plant cultures can be obtained from. The options provided are leaves, root tips, pollen grains, and buds.

3. **Analyzing Each Option**:
- **Leaves**: These are part of the plant that undergoes mitosis for growth and development, thus they are diploid (2n).
- **Root Tips**: Similar to leaves, root tips are also growing regions that undergo mitosis, making them diploid (2n).
- **Buds**: Buds are areas of growth that also divide by mitosis, resulting in diploid (2n) cells.
- **Pollen Grains**: Pollen grains are the male gametophytes produced through meiosis, and they are haploid (n).

4. **Conclusion**:
- Since haploid plant cultures are derived from haploid cells, the only option that provides haploid cells is pollen grains. Therefore, haploid plant cultures are obtained from pollen grains.

5. **Final Answer**:
- Haploid plant cultures are obtained from **pollen grains**.

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