Name the compounds that have a high nitrogen to carbon ratio and are transported form of nitrogen in some plants.

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for compounds that have a high nitrogen to carbon ratio and are involved in the transport of nitrogen in some plants.

2. **Identifying the Compound**: The compound that fits this description is **ureides**. Ureides are derivatives of urea and contain a high nitrogen to carbon ratio.

3. **Role in Plants**: Ureides serve as a transported form of nitrogen in certain plants, particularly in legumes. They are important for nitrogen transport from the roots to other parts of the plant.

4. **Examples of Plants**: Leguminous plants such as soybeans utilize ureides for nitrogen transport. These compounds are synthesized in the root nodules where nitrogen fixation occurs.

5. **Transport Mechanism**: Ureides are loaded into the phloem (the vascular tissue responsible for transport of nutrients) and are then distributed to developing tissues such as leaves, root tips, and seeds.

6. **Conclusion**: Therefore, the compound with a high nitrogen to carbon ratio that is transported in some plants is **ureides**.