Maximum bordered pits are found in tracheids of -

Options

A. Monocotyledons
B. Dicotyledons
C. Pteridophytes
D. Gymnosperms

Answer

**Step-by-Step Solution:**

1. **Understanding Bordered Pits**: Bordered pits are specialized structures found in the conductive tissues of plants, particularly in tracheids. They facilitate the movement of fluids between cells.

2. **Analyzing the Options**: The question provides four options: monocotyledons, dicotyledons, pteridophytes, and gymnosperms. We need to determine which group has the maximum bordered pits in their tracheids.

3. **Evaluating Monocotyledons**: Monocots are considered advanced flowering plants (angiosperms). They typically do not have a high number of bordered pits in their tracheids. Therefore, this option can be ruled out.

4. **Evaluating Dicotyledons**: Dicots are also an advanced group of angiosperms. Similar to monocots, they do not possess the maximum number of bordered pits in their tracheids. Thus, this option is also incorrect.

5. **Evaluating Pteridophytes**: Pteridophytes are the first vascular plants, and their bordered pits are not well developed. This suggests that they do not have the maximum number of bordered pits either, so this option can be ruled out.

6. **Evaluating Gymnosperms**: Gymnosperms are considered more primitive than angiosperms and are known to have a higher number of bordered pits in their tracheids compared to the other groups. Therefore, gymnosperms are the correct answer.

7. **Conclusion**: The group that has the maximum bordered pits in tracheids is **Gymnosperms**.

**Final Answer**: Gymnosperms

---