When stomata are equally distributed on both surfaces of leaf tissue,are

Options

A. Potato type
B. Oat type
C. Apple type
D. Lily type

Answer

**Step-by-Step Solution:**

1. **Understanding Stomata:**
- Stomata are small openings on the surfaces of leaves that facilitate gas exchange (such as oxygen and carbon dioxide) and transpiration (the loss of water vapor).

2. **Identifying Leaf Surfaces:**
- Leaves have two surfaces: the upper surface is called the adaxial surface, and the lower surface is called the abaxial surface.

3. **Types of Stomatal Distribution:**
- Stomata can be distributed in different ways on leaf surfaces, leading to various classifications:
- **Amphistomatic (O type):** Stomata are equally distributed on both the adaxial and abaxial surfaces.
- **Hypostomatic (Apple type):** Stomata are present only on the lower surface (abaxial).
- **Epistomatic (Lily type):** Stomata are present only on the upper surface (adaxial).
- **Potato type:** Stomata are predominantly on the lower surface but can be found on both.

4. **Determining the Correct Type:**
- The question asks for the type of stomatal distribution where stomata are equally distributed on both surfaces of the leaf. This corresponds to the amphistomatic type, also referred to as O type.

5. **Examples of Amphistomatic Leaves:**
- Common examples of plants with amphistomatic leaves include wheat and grass.

6. **Conclusion:**
- Therefore, the answer to the question is that when stomata are equally distributed on both surfaces of leaf tissue, it is referred to as the O type.

**Final Answer: O type (Amphistomatic), with examples being wheat and grass.**

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