Minimum eligibilty requirements for PGT Biology are

(a) Two year integrated Post graduate M.Sc. course of regional college of education of NCERT in concerned subject

Or

Master's degree from a recognized university with at least 50% marks

(b) B.Ed. or equivalent degree from recognized university

(c) Proficiency in teaching in Hindi and English mode.

Candidates having special B.Ed. are not eligible for post of PGT.

If you fulfill all these requirements then you can apply for the post.