Pith cavity occurs in the stem of

Options

A. Helianthus
B. Zea mays
C. Cucurbita
D. Dracaena

Answer

To determine where the pith cavity occurs in the stem, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Pith Cavity**: The pith cavity is an empty space that can form in the center of the stem when the pith, which is the central tissue, disintegrates. This phenomenon is typically observed in certain types of plants.

2. **Identifying Plant Types**: Plants can be classified into two main categories: monocots and dicots. Monocots generally do not have a pith cavity, while dicots often do.

3. **Analyzing the Options**: The options provided are:
- A) Helianthus (Sunflower)
- B) G-Maze (likely referring to maize)
- C) Cucurbita (Squash)
- D) Drachiana

4. **Classifying Each Option**:
- **Helianthus**: This is a dicot plant.
- **G-Maze**: This is a monocot plant.
- **Cucurbita**: This is a dicot plant.
- **Drachiana**: This is also a monocot plant.

5. **Determining Which Plant Has a Pith Cavity**: Since the pith cavity is typically found in dicots, we focus on the dicot options. Among the options, Cucurbita is a dicot plant that is known to have a pith cavity.

6. **Conclusion**: The correct answer is **C) Cucurbita**, as it is the only option that is a dicot and is known to exhibit a pith cavity in its stem.