Knots are formed in the wood due to

Options

A. Injuries caused by animals
B. Branches getting buried in the main stem
C. Insects
D. Branches falling off and leaving scars

Answer

**Step-by-Step Solution:**

1. **Understanding Knots**:
- Knots are blemishes or irregularities found in the wood of trees. They can appear as bulges, hollows, or spots on the trunk or branches.

2. **Formation of Knots**:
- Knots are primarily formed due to the natural growth process of a tree. As a tree grows, its trunk increases in circumference.

3. **Branch Growth**:
- When the trunk expands, it can overtake the branches that are growing out from it. This means that the trunk continues to grow and encases the base of the branches.

4. **Living Wood**:
- Inside the knots, living wood is formed. This wood is typically tougher than the surrounding wood, contributing to the knot's solid structure.

5. **Conclusion**:
- The primary reason for knot formation is that the branches become buried in the main stem of the tree as it grows. Therefore, the correct answer to the question is that knots are formed due to being "Buried in Main Stem".

**Final Answer**: Knots are formed in the wood due to being buried in the main stem.

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