The candidate should have studied Chemistry or Biochemistry compulsorily as an optional subject along with at least on of the following optional subjects : (a) Microbiology (b) Biotechnology (c) Botany (d) Applied Botany (e) Zoology (f) Applied Zoology (g) Industrial Microbiology (h) Environmental Science (i) Genetics (j) Applied Genetics (k) Sericulture (l) Home Science (m) Life Science (n) Biological Science (o) Agricultural Science (p) Biochemistry (q) Dairy Sciences (r) Horticulture (s) Forestry and (t) Fisheries.