Which statement is not correct of GM crops?

Options

A. Crops more tolerant to abiotic stresses
B. Enhanced nutritional value of food
C. Reduced reliance on chemical pesticides
D. Decreased efficiency of mineral usage by plants

Answer

To determine which statement is not correct about GM (Genetically Modified) crops, we need to analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understand GM Crops**: GM crops are organisms whose genetic material has been altered using genetic engineering techniques. The goal is to introduce desirable traits.

2. **Identify Desirable Characteristics**: Desirable characteristics of GM crops often include:
- Increased yield
- Enhanced nutritional value
- Resistance to pests and diseases
- Tolerance to abiotic stresses (like drought or salinity)
- Reduced reliance on chemical pesticides and fertilizers

3. **Analyze Each Statement**:
- **Option A**: "Crops more tolerant to abiotic stress" - This is a desirable trait as it helps crops survive in adverse environmental conditions.
- **Option B**: "Enhanced nutritional value of food" - This is also desirable as it improves the nutritional content of food.
- **Option C**: "Reduced reliance on chemical pesticide" - This is desirable as it can lead to lower costs for farmers and reduced environmental impact.
- **Option D**: "Decreased efficiency of mineral usage by plants" - This is not desirable. If plants use minerals less efficiently, it leads to wastage and can negatively affect crop yield.

4. **Conclusion**: The statement that is not correct regarding GM crops is **Option D: decreased efficiency of mineral usage by plants**. This characteristic would be detrimental rather than beneficial.

### Final Answer:
The statement that is not correct about GM crops is **"Decreased efficiency of mineral usage by plants."**

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