Which of the following is a transgenic plant?

Options

A. Hirudin
B. Flavr savr
C. Triticale
D. All of these

Answer

To determine which of the following is a transgenic plant, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understand the Definition of Transgenic Plants**:
- Transgenic plants are those that have been genetically modified to contain a gene or genes from another species. This is typically done to introduce new traits, such as resistance to pests or improved nutritional content.

2. **Evaluate the First Option - Hirudin**:
- Hirudin is described as a recombinant protein used as an anticoagulant. It is produced from the seeds of Brassica nepus (a type of plant) by incorporating a gene for this protein. However, hirudin itself is not a plant; it is a protein product. Therefore, this option does not represent a transgenic plant.

**Hint**: Look for whether the option is a plant or a product derived from a plant.

3. **Evaluate the Second Option - Flower Saver**:
- Flower Saver is identified as a variety of tomato that has been genetically modified to block the gene for polygalacturonase, which is responsible for fruit ripening. By blocking this gene, the shelf life of the tomatoes is extended. This modification clearly indicates that Flower Saver is a transgenic plant.

**Hint**: Check if the option involves a plant that has been genetically modified to express or suppress specific traits.

4. **Evaluate the Third Option - Triticale**:
- Triticale is an allopolyploid variety created through hybridization between wheat (Triticum turgidum) and rye. While it is a hybrid, it is not considered a transgenic plant because it does not involve the direct insertion of foreign genes into the genome of a plant.

**Hint**: Consider whether the plant was created through traditional breeding methods or through genetic engineering.

5. **Conclusion**:
- Based on the evaluations, the only option that qualifies as a transgenic plant is **Flower Saver**.

### Final Answer:
**The transgenic plant among the options is Flower Saver.**

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