Which is correct about statements X and Y statement X. DDT shows biological magnification
Statement Y : UV radiations causes ozone depletion .

Options

A. X and Y both correct, Y is proper explanation of X
B. X and Y both correct, Y is not proper explanation of X
C. X is correct, Y is not correct
D. X is not correct, Y is correct.

Answer

To determine which statements X and Y are correct, let's analyze each statement step by step:

### Step 1: Analyze Statement X
- **Statement X**: "DDT shows biological magnification."
- **Explanation**: DDT (Dichlorodiphenyltrichloroethane) is a non-biodegradable insecticide that accumulates in the environment. When it enters water bodies through runoff from agricultural fields, it gets absorbed by aquatic organisms. As these organisms are consumed by predators, the concentration of DDT increases at each trophic level. This process is known as biological magnification, where the concentration of harmful substances increases in organisms at higher trophic levels.
- **Conclusion**: Statement X is **correct**.

### Step 2: Analyze Statement Y
- **Statement Y**: "UV radiations cause ozone depletion."
- **Explanation**: Ozone depletion is primarily caused by chlorofluorocarbons (CFCs) and other ozone-depleting substances. While UV radiation interacts with ozone in the stratosphere, it is not the cause of ozone depletion. Instead, CFCs break down ozone molecules, leading to a reduction in the ozone layer. Therefore, the assertion that UV radiation causes ozone depletion is incorrect.
- **Conclusion**: Statement Y is **incorrect**.

### Final Conclusion
- Based on the analysis, we conclude that:
- Statement X is correct.
- Statement Y is not correct.

Thus, the correct option is: **X is correct, Y is not correct.**

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