Microbiology Daisy head appearance of colonies of Corynebacterium diphtheria on blood tellurite agar is shown by A Gravis biotype B Intermedius biotype C Mitis biotype D None of the above π‘ Explanation Daisy head appearance of colonies of Corynebacterium diphtheria on blood tellurite agar is shown by β Correct Answer: A. Gravis biotype