The ....cell is bigger , has abundant food reserve and a large irregularly shape nucleus. The ..... is small and has a spindle-shaped nucleus with dense cytoplasm.

Options

A. a - vegetative cell, b - generative cell
B. a - generative cell, b-vegetative cell
C. a - tapetal cell, b- endothelial cell
D. a - endothelial cell, b-tapatal cell

Answer

To solve the question, we need to identify the two types of cells mentioned: one that is larger with abundant food reserves and a large irregularly shaped nucleus, and the other that is smaller with a spindle-shaped nucleus and dense cytoplasm.

### Step-by-Step Solution:

1. **Identify the Context**: The question refers to cells within pollen grains, which are the male gametes in plants. Pollen grains consist of two types of cells: the vegetative cell and the generative cell.

2. **Analyze the Characteristics of Each Cell**:
- **Vegetative Cell**:
- Bigger in size.
- Has abundant food reserves.
- Contains a large irregularly shaped nucleus.
- **Generative Cell**:
- Smaller in size.
- Has a spindle-shaped nucleus.
- Contains dense cytoplasm.

3. **Assign the Characteristics to Each Cell**:
- Based on the characteristics outlined:
- The **vegetative cell** is the one that is bigger, has abundant food reserves, and a large irregularly shaped nucleus.
- The **generative cell** is the smaller cell with a spindle-shaped nucleus and dense cytoplasm.

4. **Conclusion**:
- The first blank should be filled with "vegetative cell" and the second blank with "generative cell".

### Final Answer:
The **vegetative cell** is bigger, has abundant food reserve and a large irregularly shaped nucleus. The **generative cell** is small and has a spindle-shaped nucleus with dense cytoplasm.