Select correct statement w.r.t. the release of pollen grains in cereals

Options

A. After single mitosis in microspore
B. At 3 celled stage
C. At 2 celled stage
D. More than one option is correct

Answer

To answer the question regarding the release of pollen grains in cereals, we will analyze the process step by step.

### Step-by-Step Solution:

1. **Understanding Microspores**: In flowering plants, microspores are produced through meiosis in the anthers. Each microspore can develop into a pollen grain.

2. **Development of Pollen Grains**: After the formation of microspores, they undergo mitosis. This process is crucial as it leads to the formation of the pollen grain structure.

3. **Cell Division Stages**: The microspores can develop into pollen grains in different stages:
- At the **two-celled stage**, the microspore divides mitotically to form a generative cell and a tube cell.
- At the **three-celled stage**, the generative cell further divides to produce two male gametes.

4. **Release of Pollen Grains**: In cereals, such as wheat, the pollen grains are typically released at the **three-celled stage**. This means that before the pollen grains are shed, the generative cell has already divided to form two male gametes.

5. **Conclusion**: The correct statement regarding the release of pollen grains in cereals is that they are shed at the **three-celled stage**.

### Final Answer:
The correct statement with respect to the release of pollen grains in cereals is: **Pollen grains are released at the three-celled stage.**

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