Ubisch bodies are connected with the development of

Options

A. sporogenous tissue
B. tapetum just below endothecium
C. endothecium
D. exothecium

Answer

### Step-by-Step Solution:

1. **Understanding Ubisch Bodies**: Ubisch bodies are spherical structures that play a crucial role in the development of pollen grains during the process of meiosis in pollen mother cells.

2. **Pollen Mother Cells**: These cells are located in the anther of flowering plants and undergo meiosis to produce microspores, which eventually develop into pollen grains.

3. **Formation of Pro-Ubisch Bodies**: Initially, in the sporogenous tissue of the anther, the cells of the tapetum (a layer of cells surrounding the sporogenous tissue) contain numerous spherical structures known as pro-ubisch bodies.

4. **Meiosis and Ubisch Bodies**: During meiosis in the pollen mother cells, the number of pro-ubisch bodies increases. These bodies then cross the tapetal membrane and are transformed into ubisch bodies.

5. **Role of Ubisch Bodies**: The primary function of ubisch bodies is to coat the developing pollen grains with sporopollenin, a substance that contributes to the thickening of the outer layer of pollen grains, known as the exine.

6. **Conclusion**: Therefore, ubisch bodies are connected with the development of the tapetum, which is crucial for the formation of pollen grains.

### Final Answer:
Ubisch bodies are connected with the development of the **tapetum**.