Q. Assertion : Sulphur is the main constituent of several coenzymes, vitamins and ferredoxin.
Reason : Sulphur is present in two amino acids - valine and cysteine.

 2777  178 Mineral Nutrition Report Error

Solution:

Sulphur is an important macroelement of plants. Plants obtain sulphur in the form of sulphate . Sulphur is present in two amino acids - cysteine and methionine and is the main constituent of several coenzymes, vitamins (thiamine, biotin, coenzyme ) and ferredoxin.