Introduction:
The UPSC (Union Public Service Commission) conducts the Civil Services Examination (CSE) every year to recruit candidates for various administrative positions in the Indian government. The optional subject of Zoology is offered in the examination for candidates who have a background or interest in the field of zoological sciences.

Negative Marking in UPSC:
Negative marking is a common practice in competitive exams, including the UPSC CSE, to discourage random guessing and ensure that candidates have a thorough understanding of the subject matter. It is important to know whether there is negative marking in the Zoology optional subject of Paper I for the UPSC CSE.

Negative Marking in Paper I of UPSC Zoology Optional:
The Zoology optional subject in the UPSC CSE is divided into two papers - Paper I and Paper II. Paper I deals with various topics related to non-chordates and chordates, while Paper II focuses on topics like ecology, ethology, and evolution.

Negative Marking in Paper I:
As per the guidelines provided by the UPSC, there is no negative marking for incorrect answers in the optional subjects of the UPSC CSE. This means that candidates are not penalized for wrong answers in Paper I of the Zoology optional subject.

Benefits of No Negative Marking:
The absence of negative marking in Paper I of the Zoology optional subject provides certain advantages to the candidates:

1. Encourages Attempting Questions: Candidates are more likely to attempt questions even if they are unsure about the answers, as there is no penalty for incorrect responses. This can increase the chances of scoring higher marks overall.

2. Reduction of Exam Anxiety: Candidates may feel less anxious and stressed during the exam, knowing that they will not lose marks for wrong answers. This can lead to better performance and improved concentration.

3. Opportunity for Learning: The absence of negative marking allows candidates to take calculated risks and attempt questions that they may not be completely sure about. This can provide a valuable learning opportunity and help in expanding their knowledge base.

4. Increased Confidence: Candidates may feel more confident in their attempts, as they can freely express their understanding of the subject without the fear of losing marks. This can have a positive impact on their overall performance.

In conclusion, Paper I of the UPSC Zoology optional subject does not have negative marking. This provides candidates with the opportunity to attempt questions without the fear of losing marks, thereby encouraging a more confident and calculated approach towards the examination.