In an annual plant, exchange of gases takes place mainly through

Options

A. Leaf scars
B. Lenticels
C. Stomata
D. Woody stem

Answer

**Step-by-Step Solution:**

1. **Understand the Concept of Annual Plants**: Annual plants are those that complete their life cycle in a single growing season. This includes processes such as germination, growth, flowering, and seed production, after which they die.

2. **Identify the Need for Gas Exchange**: These plants require gas exchange primarily for two processes: photosynthesis and respiration. Photosynthesis requires carbon dioxide, while respiration involves the uptake of oxygen and the release of carbon dioxide.

3. **Locate the Structures for Gas Exchange**: In plants, gas exchange occurs mainly through specialized structures. In the case of annual plants, this occurs predominantly in the leaves.

4. **Recognize the Role of Stomata**: The leaves of plants have small openings called stomata. These stomata are crucial for the exchange of gases. They allow carbon dioxide to enter the leaf for photosynthesis and oxygen to exit as a byproduct.

5. **Conclude with the Correct Answer**: Therefore, the main structure through which gas exchange takes place in annual plants is the stomata.

**Final Answer**: In an annual plant, exchange of gases takes place mainly through stomata.

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