Introduction:
Answer writing is a crucial aspect of any optional subject in UPSC examinations, including Zoology. It is important to have a clear understanding of the subject matter and the ability to present it effectively. To enhance answer writing skills in Zoology, there are several journals and publications that can be referred to.

1. Journal of Zoology:
- The Journal of Zoology is a renowned scientific journal that publishes original research articles and reviews.
- It covers various aspects of zoology, including animal behavior, ecology, evolution, and conservation.
- Reading articles from this journal can provide insights into current research trends and help in understanding key concepts in zoology.

2. Journal of Experimental Zoology:
- The Journal of Experimental Zoology is another reputable publication that focuses on experimental studies in zoology.
- It publishes research articles related to animal physiology, development, and genetics.
- Referring to this journal can provide valuable information on experimental techniques and their applications in zoology.

3. Journal of Animal Ecology:
- The Journal of Animal Ecology is a leading publication that focuses on the ecology and behavior of animals.
- It publishes research articles on topics such as population dynamics, community ecology, and animal interactions.
- Reading articles from this journal can help in understanding the ecological aspects of zoology and how they impact animal behavior.

4. Animal Behaviour:
- Animal Behaviour is a renowned journal that publishes research articles on various aspects of animal behavior.
- It covers topics such as social behavior, communication, and cognitive abilities of animals.
- Referring to this journal can provide insights into the mechanisms behind animal behavior and the factors influencing it.

5. Indian Journal of Zoology:
- The Indian Journal of Zoology is a publication focusing on research conducted in India.
- It covers a wide range of topics in zoology, including taxonomy, physiology, and conservation.
- Reading articles from this journal can provide context-specific information and examples that are relevant to the UPSC examination.

Conclusion:
Referring to journals and publications in zoology can greatly enhance one's answer writing skills for the UPSC examination. The suggested journals provide valuable insights into current research, experimental techniques, ecological aspects, animal behavior, and other relevant topics. By staying updated with the latest research and understanding key concepts in zoology, candidates can effectively present their answers and score well in the UPSC examination.