An improved variety of transgenic basmati rice

Options

A. does not requre chemical fertilizers and growth hormones
B. gives high yield and is rich in vitamin a
C. is completely resistant to all insect pests and diseases of paddy
D. gives high yield but has no characteritic aroma

Answer

### Step-by-Step Text Solution:

1. **Understanding Transgenic Basmati Rice**:
- Transgenic basmati rice is a genetically modified organism (GMO) where specific genes have been inserted to enhance certain traits.

2. **Genetic Modification**:
- In this case, genes responsible for the synthesis of carotenoids have been inserted into the basmati rice. Carotenoids are important as they are precursors to vitamin A.

3. **Nutritional Benefits**:
- The incorporation of carotenoid genes means that this improved variety of basmati rice is rich in vitamin A, which is essential for preventing conditions such as night blindness.

4. **Evaluating Options**:
- When considering the options provided:
- **Option A**: "Improved does not require chemical and fertilizers" - This is incorrect as all crops, including transgenic varieties, may still require some level of fertilizers and chemicals.
- **Option B**: "High yield and is rich in vitamin A" - This is correct as the transgenic basmati rice is designed to have a higher yield and enhanced nutritional value.
- **Option C**: "Completely resistant to all insect pests and diseases" - This is incorrect as no crop is completely resistant to all pests and diseases.
- **Option D**: "Give high yield but no characteristic aroma" - This option is also incorrect as it misrepresents the qualities of basmati rice.

5. **Conclusion**:
- The correct answer is Option B: "High yield and is rich in vitamin A".