A biodegradable plastic can be obtained from

Options

A. Rhodococcus equi
B. Pseudomonas species
C. Ochrobacterum species
D. All the above.

Answer

To answer the question "A biodegradable plastic can be obtained from", we will analyze the options provided and understand the sources of biodegradable plastics.

### Step-by-Step Solution:

1. **Understanding Biodegradable Plastics**:
- Biodegradable plastics are materials that can decompose naturally through the action of living organisms, typically bacteria. They are often made from renewable resources.

2. **Types of Biodegradable Plastics**:
- The two main types of biodegradable plastics mentioned are polyactic acid (PLA) and polyhydroxyalkanoates (PHA).

3. **Identifying Bacterial Sources**:
- Various species of bacteria are known to produce these biodegradable plastics. Some of the notable ones include:
- **Rhodococcus aequi**: A gram-positive bacterium that can produce biodegradable plastics.
- **Pseudomonas species**: Another group of bacteria that can synthesize biodegradable plastics.
- **Ochrobacterium species**: This species is also known to contribute to the production of biodegradable plastics.

4. **Analyzing the Options**:
- The question provides four options:
- A) Rhodococcus aequi
- B) Pseudomonas species
- C) Ochrobacterium species
- D) All of the above
- Since all three bacterial species listed (Rhodococcus aequi, Pseudomonas species, and Ochrobacterium species) are known to produce biodegradable plastics, we can conclude that the correct answer includes all of them.

5. **Conclusion**:
- Therefore, the correct answer to the question is **D) All of the above**.