Aleurone layer is present in

Options

A. Bacterial biofilm
B. Virus infected plant cell
C. Pathogenic fungi
D. Seed

Answer

**Step-by-Step Solution:**

1. **Understanding the Aleurone Layer**: The aleurone layer is a layer of cells that surrounds the endosperm in seeds, particularly in monocotyledons (monocots). It plays a crucial role in seed development and germination.

2. **Identifying the Function of Endosperm**: The endosperm is the food-storing tissue in seeds, especially in monocots. It provides essential nutrients to the developing embryo during seed germination.

3. **Recognizing the Context of the Question**: The question asks where the aleurone layer is present. The options provided include bacterial biofilm, virus-infected plant cells, pathogenic fungi, and seeds.

4. **Analyzing Each Option**:
- **Bacterial Biofilm**: This is a community of bacteria that adhere to surfaces and is not related to the aleurone layer. Therefore, this option is incorrect.
- **Virus-Infected Plant Cells**: These are simply plant cells that have been infected by a virus. They do not contain an aleurone layer. Thus, this option is also incorrect.
- **Pathogenic Fungi**: This refers to fungi that cause disease. They do not have an aleurone layer. Hence, this option is incorrect as well.
- **Seeds**: The aleurone layer is indeed present in seeds, specifically in monocot seeds, where it surrounds the endosperm. This option is correct.

5. **Conclusion**: Based on the analysis, the correct answer to the question "Aleurone layer is present in" is **seeds**, specifically in monocot seeds.

**Final Answer**: The aleurone layer is present in seeds (specifically in monocot seeds).

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