Minerals required for germination of pollen gain on stigma are

Options

A. Ca, B
B. N, P
C. Mg, S
D. Fe, Ca

Answer

To determine the minerals required for the germination of pollen grains on the stigma, we can follow these steps:

1. **Understanding Pollen Grain Germination**: Pollen grains are the male gametophytes in plants and require certain minerals for successful germination on the stigma.

2. **Identifying Key Minerals**: The primary minerals that are known to be essential for pollen germination include calcium and boron.

3. **Role of Calcium**: Calcium ions play a crucial role in the interaction between the pollen and the pistil (the female reproductive part of the flower). They help in guiding the entry of the pollen into the embryo sac.

4. **Role of Boron**: Boron is important for the uptake of calcium ions in plants and is also necessary for the process of pollen germination. Additionally, boron is involved in cell elongation, which is vital for the growth of the pollen tube.

5. **Conclusion**: Based on the functions of these minerals, we conclude that the correct answer to the question regarding the minerals required for the germination of pollen grains on the stigma is **calcium and boron**.

**Final Answer**: The minerals required for germination of pollen grain on stigma are calcium and boron.

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