Ubisch bodies are connected with the development of

Options

A. exine of pollen grain
B. endothecium
C. pollen tube
D. all of these

Answer

### Step-by-Step Solution:

1. **Understanding Ubisch Bodies**: Ubisch bodies are specialized structures found within the tapetal cells of the anther. They play a crucial role in the development of pollen grains.

2. **Structure of Anther**: The anther is composed of four pollen sacs (microsporangia). Each pollen sac contains layers of cells, including the epidermis, middle layer, and the innermost layer known as the tapetum.

3. **Role of Tapetum**: The tapetum is the innermost layer of the anther wall. It is rich in nutrients and provides nourishment to the developing pollen grains.

4. **Location of Ubisch Bodies**: Ubisch bodies are found within the tapetal cells. Their presence is significant for the development of the pollen grain.

5. **Function of Ubisch Bodies**: The primary function of Ubisch bodies is to aid in the formation of the pollen grain wall, specifically the exine, which is the outer layer of the pollen grain.

6. **Conclusion**: Therefore, Ubisch bodies are connected with the development of the exine of pollen grains, which are essential for the male gametes in flowering plants.

### Final Answer:
Ubisch bodies are connected with the development of the exine of pollen grains.

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