In dlicots, guard cells are (A)_____ shaped whereas in grasses guard cells are (B)____ shaped.

Answer

To solve the question regarding the shapes of guard cells in dicots and grasses (monocots), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Context**:
- The question asks about the shapes of guard cells in two different types of plants: dicots and monocots (grasses).

2. **Identify the Function of Guard Cells**:
- Guard cells are specialized cells that surround the stomatal pores and are responsible for regulating the opening and closing of these pores, which is crucial for gas exchange in plants.

3. **Locate the Guard Cells**:
- Guard cells are located in the epidermal layer of the plant and contain chloroplasts, which are important for photosynthesis.

4. **Determine the Shape of Guard Cells in Dicots**:
- In dicots, guard cells are typically described as being kidney-shaped or bean-shaped.

5. **Determine the Shape of Guard Cells in Monocots (Grasses)**:
- In contrast, the guard cells in monocots (such as grasses) are usually described as being dumbbell-shaped.

6. **Fill in the Blanks**:
- Based on the information gathered, we can fill in the blanks:
- (A) Kidney-shaped or bean-shaped (for dicots)
- (B) Dumbbell-shaped (for grasses)

### Final Answer:
In dicots, guard cells are (A) kidney-shaped whereas in grasses, guard cells are (B) dumbbell-shaped.

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