Which one of the following statements is correct ?

Options

A. The seed in grasses is not endospermic.
B. Mango is a Parthenocarpic fruit.
C. A proteinaceous aleurone layer is present in maize grain.
D. A sterile pistil is called a stamionde.

Answer

To determine which statement is correct among the given options, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Analyzing Statement 1**: "The seed in grass is not endospermic."
- Grass belongs to the family Poaceae, which is known for having endospermic seeds. Endospermic seeds contain a nutrient-rich tissue called endosperm that nourishes the developing embryo. Therefore, this statement is incorrect.

2. **Analyzing Statement 2**: "Mango is a parthenocarpic fruit."
- Parthenocarpy refers to the development of fruit without fertilization, resulting in seedless fruit. However, mangoes typically have a hard stone containing seeds, indicating that they are not parthenocarpic. Hence, this statement is also incorrect.

3. **Analyzing Statement 3**: "The proteinaceous alluron layer is present in maize."
- Maize (corn) does indeed have an alluron layer, which is a protein-rich layer surrounding the endosperm. This statement is correct.

4. **Analyzing Statement 4**: "The sterile pistil is called staminode."
- A staminode refers to a sterile stamen, not a sterile pistil. The correct term for a sterile pistil is "pistillode." Therefore, this statement is incorrect.

### Conclusion:
After analyzing all four statements, we find that only Statement 3 is correct: "The proteinaceous alluron layer is present in maize."

### Final Answer:
The correct statement is **Option 3**.

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