Hello Medha,
As you studied puc in pcmb you can go through any courses in bsc and choosing the stream is very important. As you are interested in bio stream there are variety of courses in this stream. It's based on your interest to choose the stream. I recommend you to go through the course outcomes of these courses and choose the course based on your interest . Your interest only makes you study the best. So choose good stream based on your interest.
Thank you
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