Yes, it is important to allocate specific time for practicing answer writing and improving answer presentation skills in your study plan. Here's why:

1. Enhances comprehension and retention:
- Writing answers helps in better comprehension and retention of the subject matter.
- When you write answers, you need to analyze the question, recall relevant information, and articulate your thoughts. This process strengthens your understanding of the topic.

2. Develops critical thinking skills:
- Answer writing requires you to think critically and present your arguments in a logical and coherent manner.
- By regularly practicing answer writing, you can sharpen your analytical skills, learn to evaluate different perspectives, and develop the ability to arrive at well-reasoned conclusions.

3. Improves time management:
- UPSC exams have time constraints, and effective time management is crucial.
- By practicing answer writing, you learn to structure your thoughts quickly and express them concisely. This helps in completing the exam within the given time frame.

4. Enhances writing skills:
- Answer writing involves articulating your thoughts in a clear and concise manner.
- Regular practice improves your writing skills, including grammar, vocabulary, sentence structure, and overall coherence.
- Strong writing skills are essential to effectively communicate your ideas during the examination.

5. Familiarizes with exam pattern and requirements:
- Practicing answer writing familiarizes you with the specific requirements of the UPSC exam.
- You become aware of the word limit, marking scheme, and the type of questions asked.
- This knowledge helps in tailoring your answers to meet the exam expectations.

6. Builds confidence:
- Regular practice boosts your confidence, as you become more comfortable with the exam format and develop a systematic approach to answer writing.
- This confidence translates into better performance during the actual examination.

7. Provides feedback for improvement:
- Allocating specific time for answer writing allows you to assess your performance and identify areas of improvement.
- You can review your answers, seek feedback from mentors or peers, and work on enhancing your answer presentation skills.

In conclusion, allocating specific time for practicing answer writing and improving answer presentation skills is crucial for UPSC preparation. It enhances comprehension, critical thinking, time management, writing skills, and familiarity with the exam pattern. It also boosts confidence and provides feedback for improvement. Regular practice in these areas will greatly contribute to your success in the UPSC examination.