Agriculture

No, its not. You can easily crack it if you have dedication and passion for it. Yes, this exam is tough but if you study well, then you can easily crack it. For IIT JAM Biotechnology, you should follow these tips:
First check the complete syllabus and exam pattern. Refer best books and study materials that covers the entire syllabus. Solve a previous years IIT JAM Question Papers. This will give you an idea about the pattern and difficulty level of the questions. Click here http://bit.ly/2JzY01g to download IIT JAM Previous Year Question Papers
Also take online mock tests to analyze your preparation level. This will also increase your speed and accuracy while solving questions. Learn and make notes of all the important stuff. This will help you in your last minute preparation. Learn all the important formulas. Practice derivations and diagrams. Improve your weaker areas. Study more for the topics in which you are weak. Study at least 6-7 hours daily and give your last 30-45 minds to the revision daily. Maintain your health as well. Avoid eating junk food. Always take a healthy and balanced diet. Best of Luck!