Which micronutrient is involved in pollen germination ?

Explanation

**Step-by-Step Solution:**

1. **Understanding Micronutrients**: Micronutrients are essential elements that plants require in very small amounts for their growth and development. They play critical roles in various physiological processes.

2. **Identifying Relevant Micronutrients**: Some common micronutrients include boron (B), manganese (Mn), magnesium (Mg), and cobalt (Co). Each of these has specific functions in plant biology.

3. **Focusing on Pollen Germination**: The question specifically asks about the micronutrient involved in pollen germination. Pollen germination is a crucial process for plant reproduction.

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