Spring wood and Autumn wood are found in

Options

A. Stem of monocot
B. Root of monocot
C. Leaf of dicot
D. Stem of dicot

Answer

**Step-by-Step Solution:**

1. **Understanding Spring Wood and Autumn Wood:**
- Spring wood, also known as early wood, is produced during the spring season when the cambium is actively growing. This results in the formation of secondary xylem that is lighter in color and has larger cells to facilitate water transport.
- Autumn wood, also known as late wood, is produced during the autumn (or winter) season when cambium activity decreases. This wood is darker in color, has smaller cells, and is denser due to reduced growth conditions.

2. **Identifying the Plant Structures:**
- Both spring wood and autumn wood are produced in the stems of perennial plants, particularly in dicots. The cambium layer in these plants is responsible for the production of both types of wood.

3. **Formation of Annual Rings:**
- The combination of spring wood and autumn wood forms what is known as an annual ring. This ring can be observed in the cross-section of a dicot stem, indicating the growth patterns of the plant over the seasons.

4. **Selecting the Correct Option:**
- The question asks where spring wood and autumn wood are found. The options provided include:
- Stem of monocot
- Root of monocot
- Leaf of dicot
- Stem of dicot
- Since both types of wood are produced in the stems of dicots, the correct answer is "stem of dicot."

5. **Conclusion:**
- Therefore, spring wood and autumn wood are found in the stem of dicots.

**Final Answer:**
Spring wood and autumn wood are found in the stem of dicots.

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