Buds occuring on the nodes outside the leaf bases are

Options

A. Axillary
B. Extra-axillary
C. Terminal
D. Cauline

Answer

To answer the question "Buds occurring on the nodes outside the leaf bases are," we will analyze the given options step by step.

### Step-by-Step Solution:

1. **Understanding Buds**:
- Buds are undeveloped shoots that can grow into new stems or flowers. They can be classified based on their location on the plant.

2. **Identifying the Options**:
- The options given are:
- A) Axillary
- B) Extra axillary
- C) Terminal
- D) Colonal

3. **Analyzing Axillary Buds**:
- **Axillary Buds**: These are located in the axil of the leaf, which is the angle between the leaf and the stem. Since the question specifies "outside the leaf bases," axillary buds do not fit this description.
- **Conclusion**: Axillary buds are not the correct answer.

4. **Analyzing Extra Axillary Buds**:
- **Extra Axillary Buds**: These buds are formed on the nodes of the stem outside the leaf bases. They can grow from positions above or below the axil of the leaf.
- **Conclusion**: Extra axillary buds fit the description given in the question.

5. **Analyzing Terminal Buds**:
- **Terminal Buds**: These are located at the tip of the stem and are responsible for the growth in length of the plant. They do not occur outside the leaf bases.
- **Conclusion**: Terminal buds are not the correct answer.

6. **Analyzing Colonal Buds**:
- **Colonal Buds**: These arise from the aerial parts of the stem but do not specifically refer to buds located outside the leaf bases.
- **Conclusion**: Colonal buds are not the correct answer.

7. **Final Conclusion**:
- Based on the analysis, the correct answer is **B) Extra axillary** buds, as they are the ones that occur on the nodes outside the leaf bases.

### Final Answer:
**B) Extra axillary**