Before meiosis the microsporocyte become surrounded by a thickening of

Options

A. Lignin
B. Suberin
C. Hemicellulose
D. Callose

Answer

To answer the question "Before meiosis the microsporocyte becomes surrounded by a thickening of," we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Microsporocyte**:
- The microsporocyte, also known as the microspore mother cell, is a diploid cell that undergoes meiosis to produce haploid microspores.

2. **Understand the Process of Meiosis**:
- Before meiosis occurs, the microsporocyte prepares for this division. Meiosis is a type of cell division that reduces the chromosome number by half, resulting in four haploid cells from one diploid cell.

3. **Consider the Surrounding Structure**:
- The question asks what surrounds the microsporocyte before meiosis. This surrounding structure is crucial for the protection and support of the microsporocyte during the meiotic process.

4. **Evaluate the Options**:
- The options given are lignin, suberin, hemicellulose, and callose.
- Lignin is a complex organic polymer found in the cell walls of plants, providing rigidity.
- Suberin is a waxy substance found in the cell walls of cork tissue.
- Hemicellulose is a group of polysaccharides that provide structural support.
- Callose is a plant polysaccharide that is often involved in the formation of callose plugs in response to injury and is known to surround the microsporocyte.

5. **Select the Correct Answer**:
- Among the options, callose is specifically known to thicken around the microsporocyte before meiosis, providing protection. Therefore, the correct answer is **callose**.

### Final Answer:
Before meiosis, the microsporocyte becomes surrounded by a thickening of **callose**.

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