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 staminode

Answer

To determine which statement is correct, let's analyze each option provided in the video transcript step by step.

### Step 1: Analyze the first statement regarding the seed in grasses.
- The video mentions that the seed in grasses is not endospermic. Endospermic seeds, also known as albuminous seeds, contain endosperm at maturity. Since grasses do not have endosperm in their mature seeds, this statement is incorrect.

**Hint:** Look for the definition of endospermic seeds and examples of plants that have them.

### Step 2: Analyze the second statement about mango being a parthenocarpic fruit.
- The video states that mango is a parthenocarpic fruit, meaning it can develop without fertilization, resulting in seedless varieties. While this statement is partially correct, it is not entirely accurate as it does not cover all mangoes, which can have seeds. Therefore, this statement is also incorrect.

**Hint:** Recall the meaning of parthenocarpy and its implications on fruit development.

### Step 3: Analyze the third statement regarding the alluron layer in maize.
- The video explains that the alluron layer is the outermost layer of the endosperm and is proteinaceous. It is specifically mentioned that this layer is prominently present in maize grain. Thus, this statement is correct.

**Hint:** Understand the structure of seeds and the role of the alluron layer in providing nutrients.

### Step 4: Analyze the fourth statement about a sterile pistil.
- The video clarifies that a sterile pistil is referred to as a pistilode, while a sterile stamen is called a staminode. Since the statement incorrectly refers to a sterile pistil as a staminode, this statement is incorrect.

**Hint:** Differentiate between the terms related to the reproductive parts of flowers.

### Conclusion:
After analyzing all four statements, the correct statement is the one regarding the alluron layer being present in maize.

**Final Answer:** The correct statement is: "The proteinaceous alluron layer is present in maize."