From the following, which one best suits a characteristic of a vegetative cell in a pollen grain?

Options

A. Floats in cytoplasm of generative cell
B. Is small and spindle shaped
C. Is larger than generative cell by lacks reserve food
D. Has a large irregularly shaped nucleus

Answer

To determine which characteristic best suits a vegetative cell in a pollen grain, we need to understand the roles and features of the two types of cells present in pollen grains: the vegetative cell and the generative cell.

### Step-by-Step Solution:

1. **Identify the Types of Cells in Pollen Grains**:
- Pollen grains consist of two main types of cells: the vegetative cell and the generative cell.

2. **Understand the Role of the Vegetative Cell**:
- The vegetative cell is responsible for forming the pollen tube during fertilization. This is crucial for the delivery of sperm cells to the ovule.

3. **Compare the Sizes of the Cells**:
- The vegetative cell is generally larger than the generative cell. This size difference is significant in distinguishing between the two types of cells.

4. **Examine the Characteristics of the Vegetative Cell**:
- The vegetative cell has a large nucleus, which is often irregularly shaped. This is a key characteristic that differentiates it from the smaller generative cell.

5. **Analyze the Options Provided**:
- a. Floats in cytoplasm of generative cell: This does not accurately describe the vegetative cell.
- b. Is small and spindle-shaped: This describes the generative cell, not the vegetative cell.
- c. Larger than generative cell by lax reserve food: While the vegetative cell is larger, the phrase "by lax reserve food" is not a standard characteristic.
- d. Has a large irregularly shaped nucleus: This accurately describes the vegetative cell.

6. **Select the Correct Answer**:
- Based on the analysis, the best characteristic that suits a vegetative cell in a pollen grain is option D: "Has a large irregularly shaped nucleus."

### Final Answer:
**D. Has a large irregularly shaped nucleus.**