Which of the following has both sulphur and iron?

(1) Ferredoxin

(2) Cytochromes

(3) methionine

(4) cystine

(1) absorbed in the form of ferric ions

(2) It activates Catalase enzyme

(3) It is essential for the formation of chlorophyll

(4) It is not a part of protein.

(1) Mn⁺

(2) Mn⁺⁺

(3) Mn⁺⁺⁺

(4) MnO

(1) Zn++

(2) Cl-

(3) Ca++

(4) Mn+

(1) Cupric form

(2) Cuprous form

(3) CuO

(4) Cu

(1) Cu⁺⁺

(2) Fe⁺⁺

(3) Cu⁺

(4) Cl^-

(1) Nitrogenase

(2) Nitrate Reductase

(3) Catalase

(4) Both B and C

(1) Na+

(2) K+

(3) Cl-

(4) Mo++

(1) Cl-

(2) Mn++

(3) Cu

(4) Both A and C

(1) Any element below which plant growth is retarded but reproduction is not compromised

(2) Essential element below which plant growth is retarded

(3) Beneficial elements below which plant growth is retarded

(4) Beneficial elements above which plant growth is retarded