Identify the correct match

Options

A. Scutellum-2n
B. Endosperm-2n
C. Integuments-n
D. Aleurone layer-2n

Answer

To identify the correct match from the given options, we need to analyze the ploidy levels of each structure mentioned in the question. Here’s a step-by-step breakdown of the solution:

### Step 1: Understand the Structures
- The question provides four options related to a monocot seed: Scutellum, Endosperm, Integuments, and Eluron layer.
- Each of these structures has a specific ploidy level (N for haploid, 2N for diploid, and 3N for triploid).

### Step 2: Analyze Each Option
1. **Scutellum**:
- The scutellum is part of the embryo in monocot seeds.
- It is derived from the zygote and is therefore **2N (diploid)**.

2. **Endosperm**:
- The endosperm is formed from the fusion of one male gamete with two polar nuclei.
- This results in a **3N (triploid)** structure known as the primary endosperm nucleus.

3. **Integuments**:
- Integuments are the protective layers surrounding the ovule.
- They are derived from the diploid sporophyte and are therefore **2N (diploid)**.

4. **Eluron Layer**:
- The eluron layer is a proteinaceous layer surrounding the endosperm.
- Since it is part of the endosperm, it is also **3N (triploid)**.

### Step 3: Match the Ploidy Levels
- **Option A: Scutellum to N**: Incorrect, as Scutellum is 2N.
- **Option B: Endosperm to N**: Incorrect, as Endosperm is 3N.
- **Option C: Integuments to N**: Incorrect, as Integuments are 2N.
- **Option D: Eluron Layer to N**: Incorrect, as Eluron Layer is 3N.

### Conclusion
The correct match is:
- **Scutellum to 2N (diploid)**, which is the only correct association based on the analysis.

### Final Answer
The correct answer is **Option A: Scutellum to 2N**.

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