In a accordance with the study of industrial melanism in England , which of these is NOT correct ?

Options

A. Before industrialization , light-winged moth were more on trees
than dark-winged moths .
B. Dark winged or melanic moths were a mutant variety.
C. After industrialization , melanic moths reduced number.
D. Lichens could grow over tree trunk in a non-polluted atmosphere

Answer

To solve the question regarding Industrial Melanism in England and identify which statement is NOT correct, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Industrial Melanism**:
- Industrial Melanism refers to the phenomenon where darker individuals of a species become more common due to industrial pollution. This was notably observed in the peppered moth (Biston betularia) in England.

2. **Identify the Two Types of Moths**:
- Before industrialization, the light-colored moths were more prevalent because they blended in with the clean, light-colored trees and lichens.
- After industrialization, pollution darkened the tree bark, making the dark-colored (melanic) moths more advantageous as they could camouflage better from predators.

3. **Analyze Each Statement**:
- **Statement A**: "Before industrialization, light winged moths were more on trees than dark winged moths."
- This statement is true. Light-winged moths were indeed more common before industrialization.

- **Statement B**: "Dark winged or melanic moths were a mutant variety."
- This statement is also true. The dark-winged moths are considered a mutant variety of the original light-winged moths.

- **Statement C**: "After industrialization, melanic moths reduced in number."
- This statement is incorrect. After industrialization, melanic moths increased in number due to better camouflage against polluted environments.

- **Statement D**: "Lichens could grow over tree trunk in a non-polluted atmosphere."
- This statement is true. Lichens are sensitive to air pollution and thrive in non-polluted environments.

4. **Conclusion**:
- The statement that is NOT correct is **Statement C**: "After industrialization, melanic moths reduced in number."

### Final Answer:
The incorrect statement is **C**: "After industrialization, melanic moths reduced in number."

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