Bt cotton is preferred over other varieties of cotton because of its

Options

A. High yield
B. Quick growth
C. Weedicidal property
D. Resistance to bollworm

Answer

**Step-by-Step Solution:**

1. **Understanding Bt Cotton**: Bt cotton is a genetically modified organism (GMO) that has been engineered to express a gene from the bacterium *Bacillus thuringiensis* (Bt). This gene produces a protein that is toxic to certain pests.

2. **Genetic Modification**: The process involves incorporating the Bt gene into the cotton plant's genome. This modification allows the cotton plant to produce a natural insecticide.

3. **Pest Resistance**: The primary advantage of Bt cotton is its resistance to specific pests, particularly the cotton bollworm. This pest is known to cause significant damage to cotton crops.

4. **Benefits of Pest Resistance**: By being resistant to bollworms, Bt cotton reduces the need for chemical insecticides, leading to lower production costs and less environmental impact. Farmers can achieve higher yields and better quality cotton.

5. **Conclusion**: Therefore, Bt cotton is preferred over other varieties of cotton primarily because of its resistance to pests, especially the cotton bollworm.

**Final Answer**: Bt cotton is preferred over other varieties of cotton because of its resistance to pests, particularly the cotton bollworm.

---