name organism which produces lac.

Answer

**Step-by-Step Solution:**

1. **Understanding Lac**: Lac is a resinous substance secreted by certain insects. It is important to recognize that lac is not produced by plants or other organisms, but specifically by insects.

2. **Identifying Lac Insects**: The organisms that produce lac are known as lac insects. These insects feed on the sap of certain trees and, in the process, secrete lac.

3. **Key Organism**: One of the primary organisms known for producing lac is *Caria lacca*. This insect belongs to the phylum Arthropoda, which includes all insects.

4. **Additional Information**: *Caria lacca* is sometimes referred to as *Laccifer lacca*. This insect infests various plant species and secretes lac as a protective resin.

5. **Uses of Lac**: Lac has various applications, including being used as a traditional dye and in folk medicine for its hepatoprotective and anti-obesity properties.

6. **Final Answer**: Therefore, the organism that produces lac is *Caria lacca* (or *Laccifer lacca*).

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