Hello Tejas,

Yes ofcourse it is possible. But yes you are required to do hard work with proper dedication towards the subject.

Remember the number of hours for which you study doesn't matters but the level of concentration matters. You need to focus on quality of time rather than focusing of quantity of time.

Study and revise the chapters regularly. Practice questions and Solve MCQ's.

And coming to the most important thing in Biology is Diagrams !! Yes, I am a biology student and I know diagrams are the best way to fetch marks. So don't ignore diagrams rather keep practicing while studying the topics. 

You can also take help of some side books. The benefit of taking a side book is that you will have thousands of MCQ's given per topic to practice which will be good for your Boards exams as well as your entrance exams or any competitive exams.

Good luck !!