Shield-shaped cotyledon/scutellum occurs in

Options

A. Maize/sorghum
B. Gram
C. Pea
D. Cucumber

Answer

To determine where the shield-shaped cotyledon or scutellum occurs, follow these steps:

### Step 1: Understand Cotyledons
Cotyledons are the first leaves that appear from a seed during germination. They play a crucial role in providing nutrients to the developing plant.

**Hint:** Remember that cotyledons can be classified into two types: monocots and dicots.

### Step 2: Identify the Types of Cotyledons
There are two main types of cotyledons:
- Monocotyledons (monocots): These have one cotyledon.
- Dicotyledons (dicots): These have two cotyledons.

**Hint:** Think about the number of cotyledons when classifying plants as monocots or dicots.

### Step 3: Recognize the Shape of Cotyledons
In monocots, the cotyledon is often shield-shaped and is referred to as a scutellum. This shape is distinctive and helps in identifying monocots.

**Hint:** The term "scutellum" is key to identifying the type of cotyledon.

### Step 4: Analyze the Options
Given the options:
1. Major sorghum (monocot)
2. Gram (dicot)
3. Pea (dicot)
4. Cucumber (dicot)

From these options, only major sorghum is a monocot, which means it has the shield-shaped cotyledon or scutellum.

**Hint:** Eliminate the options that are known to be dicots.

### Step 5: Conclusion
The shield-shaped cotyledon or scutellum occurs in major sorghum.

**Final Answer:** Major sorghum.