Highly intensified second time response in acquired immunity on the basis of previous memory is called as :-

Answer

**Step-by-Step Solution:**

1. **Understanding Acquired Immunity**: Acquired immunity is the body's third line of defense against pathogens. It develops over time and is characterized by the body's ability to remember past infections.

2. **Primary and Secondary Responses**: When the body first encounters a pathogen, it mounts a primary immune response. This response is typically mild and takes time to develop as the immune system learns to recognize the pathogen.

3. **Memory Cells**: After the primary response, the immune system creates memory cells that retain information about the pathogen. These cells are crucial for the next time the body encounters the same pathogen.

4. **Secondary Response**: Upon re-exposure to the same pathogen, the immune system can quickly mobilize these memory cells, resulting in a much faster and stronger immune response known as the secondary response.

5. **Anamnestic Response**: The highly intensified second response based on the previous memory of the pathogen is referred to as the "anamnestic response." This term specifically describes the enhanced reaction due to the immune system's memory of the pathogen.

6. **Conclusion**: Therefore, the answer to the question is that the highly intensified second time response in acquired immunity on the basis of previous memory is called the **anamnestic response**.

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