Hi Subhashree!

Yes, you can opt for M.Sc. Biotechnology after B.Sc. Zoology (Hons)! But, it might be difficult for you to cope up with the Biotech subjects. You might have not studied Biotech related Subjects in your Under Graduation. So, it would be quite difficult for your at starting. But, on the other side, Biotechnology has a lot of scope both in Abroad and in India. So, you might have a lot of job opportunities!

Hope this is helpful!

All the best!