Opening in the core tissue which permit exchange of gas between atmosphere and internal tissue is called

Options

A. complementary tissue
B. periderm
C. lenticel
D. bark

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the name of the openings in the core tissue of plants that allow for gas exchange between the atmosphere and internal tissues.

2. **Analyzing the Options**:
- **Option A: Complementary Tissue**: This is not the correct answer because complementary tissue is found in association with lenticels but does not refer to the openings themselves.
- **Option B: Paraderm**: This option refers to a protective layer that includes cork and is involved in secondary growth. It does not specifically denote the openings for gas exchange.
- **Option C: Lenticels**: This is the correct answer. Lenticels are specialized openings in the bark of woody plants that facilitate gas exchange.
- **Option D: Bark**: Bark refers to the outer protective layer of the plant and does not specifically denote the openings for gas exchange.

3. **Conclusion**: After analyzing all the options, the correct answer is **Option C: Lenticels**. These are the openings in the core tissue that permit gas exchange.