Water lost through stoma is from

Options

A. Guard cell
B. Sub stomatal cavity
C. Subsidary cell
D. Lenticel

Answer

**Step-by-Step Solution:**

1. **Understanding Transpiration**:
- Transpiration is the process by which water vapor is lost from the plant to the atmosphere, primarily through small openings called stomata.

2. **Identifying the Role of Stomata**:
- Stomata are tiny pores found on the surface of leaves and stems. They are surrounded by guard cells that regulate their opening and closing.

3. **Recognizing the Sub-stomatal Cavity**:
- Behind the stomata, there is a space known as the sub-stomatal cavity. This cavity acts as a reservoir for water vapor before it exits through the stomata.

4. **Water Loss Location**:
- The water vapor that is lost during transpiration comes from the sub-stomatal cavity. When the stomata open, water vapor diffuses from this cavity into the atmosphere.

5. **Conclusion**:
- Therefore, the correct answer to the question "Water lost through stoma is from" is the sub-stomatal cavity.

**Final Answer**: The water lost through stoma is from the sub-stomatal cavity.

---