Which of the following do not show differentiation of Palisade parenchyma and spongy parenchyma in the leaves?

Options

A. Gram
B. Sorghum
C. Mustard
D. Soybean

Answer

To solve the question regarding which type of leaf does not show differentiation between palisade parenchyma and spongy parenchyma, we can follow these steps:

### Step 1: Understand the Structure of Leaves
- Leaves are primarily composed of two types of mesophyll: palisade parenchyma and spongy parenchyma.
- Palisade parenchyma consists of elongated cells that are packed closely together, primarily located beneath the upper epidermis.
- Spongy parenchyma consists of irregularly shaped cells with many intercellular spaces, located beneath the palisade layer.

**Hint:** Remember that the differentiation between palisade and spongy parenchyma is characteristic of dicot leaves.

### Step 2: Identify Types of Leaves
- **Dicot Leaves:** Typically show clear differentiation between palisade and spongy mesophyll.
- **Monocot Leaves:** Generally do not show this differentiation; the mesophyll is more homogeneous.

**Hint:** Think about the characteristics of monocots and dicots when considering leaf structure.

### Step 3: Analyze the Options
- The question provides options that include various plants. We need to identify which option represents a monocot.
- Among the options, look for a plant that is known to be a monocot, as this will be the one that does not show differentiation.

**Hint:** Recall common examples of monocots (like grasses) versus dicots (like beans or mustard).

### Step 4: Select the Correct Answer
- Based on the understanding that monocots do not show differentiation between palisade and spongy parenchyma, we can conclude that the correct answer is the option that represents a monocot.

**Hint:** The option that is a monocot will be the answer to the question.

### Conclusion
The correct answer to the question is **option number 2**, which represents a monocot leaf that does not show differentiation between palisade and spongy parenchyma.