The exapmles of transgenic plants are all, except:

Options

A. Bt tobacco
B. Golden rice was designed to produce ` beta ` - carotence in the endospen part
C. Brassica napus with hirudin gene
D. Pentadiplandra brazzeana

Answer

To determine which of the given options is not a transgenic plant, we first need to understand what a transgenic plant is. A transgenic plant is one that has been genetically modified to contain a gene or genes from another species, which is typically done through genetic engineering techniques.

1. **Identify the options**: We have four options to consider:
- A) Bt-tobacco
- B) Golden rice
- C) Brassica napus with Herodin gene
- D) Penta Diplendra Braziana

2. **Analyze each option**:
- **Option A: Bt-tobacco**: This plant has been genetically modified to include a gene from Bacillus thuringiensis, which provides resistance to certain pests. Therefore, it is a transgenic plant.
- **Option B: Golden rice**: This rice variety has been engineered to produce beta-carotene, a precursor of vitamin A, in its endosperm. This modification makes it a transgenic plant.
- **Option C: Brassica napus with Herodin gene**: This plant has been genetically modified to include the Herodin gene, making it a transgenic plant as well.
- **Option D: Penta Diplendra Braziana**: This plant has not been genetically modified or had any foreign genes introduced into its genome. Thus, it is not a transgenic plant.

3. **Conclusion**: After analyzing all the options, the only plant that is not a transgenic plant is **Penta Diplendra Braziana**. Therefore, the correct answer is option D.

### Final Answer:
**D) Penta Diplendra Braziana**