Fertilisation in Pinus occurs during

Options

A. First year of female cone
B. About an year after pollination
C. A few days before the seed formation
D. Just at the time of pollination.

Answer

**Step-by-Step Solution:**

1. **Understanding the Life Cycle of Pinus**: Pinus, a type of gymnosperm, has a reproductive cycle that lasts longer than one year. The fertilization process is part of this cycle.

2. **Identifying the Pollination Process**: In Pinus, pollination occurs approximately one year after the formation of the female cone. This indicates that fertilization does not happen immediately after pollination.

3. **Analyzing the Options**:
- **Option A**: "First year of female cone" - This is incorrect because fertilization does not occur during the first year.
- **Option B**: "About a year after pollination" - This aligns with the understanding that fertilization in Pinus occurs after a significant time post-pollination.
- **Option C**: "A few days before the seed formation" - This is incorrect as fertilization occurs well before the seeds are formed.
- **Option D**: "Just at the time of pollination" - This is also incorrect since fertilization takes longer.

4. **Conclusion**: The correct answer is **Option B: about a year after pollination**. This reflects the longer reproductive cycle of Pinus compared to other gymnosperms.

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