hello,

upsc cse is not as easy paper. you have to work hard for the paper. you have to start preparing for the exam from now on wards. zoology is taken as an optional subject for the upsc exam. it is the best optional because it leads you to the best background with life science which rare.

for preparing the exam, firstly you should  know the syllabus properly. then select best reference books. make your study plans. do mock test daily. encourage and motivate yourself by seeing differnt type of videos or listening music. in zoology there are two course;

first paper contain;

1. chordates and non chordates

2.ecology

3.ethology

4.economic zoology

5. biostatics

the second paper contains;

1. cell biology

2. genetics

3.evolution

4.biochemistry

5.physiology

with these topic you can gain marks easily and can clear the exam with hardwork.