The examples of transgenic plants are
(a) Lerma Roja (b) Flavr-Savr tomato
(c) Sharbati sonora (d) Bt cotton

Options

A. a, b & c are correct
B. a & b are correct
C. b & d are correct
D. a & c are correct

Answer

To determine which of the given options are examples of transgenic plants, we need to understand what transgenic plants are. Transgenic plants are those that have been genetically modified to express certain traits, typically through the introduction of foreign genes.

Let's analyze each option step by step:

1. **Lerma Roja**:
- Lerma Roja is a variety of wheat that has not been genetically modified. It is a traditional variety and does not possess any transgenic traits.
- **Conclusion**: Not a transgenic plant.

2. **Flavr-Savr Tomato**:
- Flavr-Savr tomato is one of the first commercially grown genetically modified (GM) crops. It was engineered to have a longer shelf life by delaying the ripening process.
- **Conclusion**: This is a transgenic plant.

3. **Sharbati Sonora**:
- Sharbati Sonora is a variety of wheat and, like Lerma Roja, it is not genetically modified. It is a traditional variety and does not have transgenic traits.
- **Conclusion**: Not a transgenic plant.

4. **Bt Cotton**:
- Bt cotton is a genetically modified variety of cotton that has been engineered to express a gene from the bacterium Bacillus thuringiensis (Bt), which provides resistance to certain pests.
- **Conclusion**: This is a transgenic plant.

After analyzing all the options, we find that the transgenic plants among the options are:

- **Flavr-Savr Tomato (b)**
- **Bt Cotton (d)**

Thus, the correct answer is **(b) Flavr-Savr Tomato and (d) Bt Cotton**.