Stem tendrils occur in

Options

A. Cucumber
B. Watermelon
C. Pumpkin
D. All of these

Answer

To determine where stem tendrils occur, we need to analyze the options provided: cucumber, watermelon, and pumpkin. Here’s a step-by-step breakdown of the solution:

### Step-by-Step Solution:

1. **Definition of Stem Tendrils**:
- Stem tendrils are specialized structures that are thin, wiry, and thread-like. They are modified stems that help climbing plants attach to supports.

2. **Origin of Stem Tendrils**:
- These tendrils originate from the axillary buds of the plant. This means that they develop from the buds located in the leaf axils (the angle between the leaf and the stem).

3. **Analyzing Each Option**:
- **Cucumber**:
- In cucumbers, stem tendrils are present and originate from the axillary buds. Thus, this option is correct.
- **Watermelon**:
- Similarly, in watermelons, stem tendrils also originate from the axillary buds. Therefore, this option is also correct.
- **Pumpkin**:
- Pumpkins exhibit the same characteristic, where stem tendrils arise from the axillary buds. Hence, this option is correct as well.

4. **Conclusion**:
- Since stem tendrils are present in all three options (cucumber, watermelon, and pumpkin), the correct answer is "all of these".

### Final Answer:
Stem tendrils occur in **cucumber, watermelon, and pumpkin**. Therefore, the answer is **all of these**.

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