When we observe the lower surface of a leaf through a magnifying lens we see numerous small openings. Which of the following is the term given to such openings ?

Options

A. Stomata
B. Lamina
C. Midrib
D. Veins

Answer

To answer the question about the small openings observed on the lower surface of a leaf, we can follow these steps:

### Step 1: Understand the Structure of a Leaf
- A leaf has different parts, including the green flat part known as the lamina, the central rib called the midrib, and the network of veins that spread throughout the leaf.

### Step 2: Identify the Openings
- When observing the lower surface of the leaf through a magnifying lens, you will notice numerous small openings.

### Step 3: Define the Term
- These small openings are specifically known as "stomata." They play a crucial role in the plant's process of gas exchange.

### Step 4: Explain the Function
- Stomata allow for the exchange of gases, such as carbon dioxide (CO2) and oxygen (O2), which are essential for photosynthesis and respiration in plants.

### Conclusion
- Therefore, the term given to the small openings on the lower surface of a leaf is **stomata**.

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