NEET Biology question
Not in NEET syllabus
Match the elements in Column I with their functions in Column II and select the combination that correctly matches all four pairs.
List-I: (A) Potassium (B) Sulphur (C) Molybdenum (D) Zinc
List-II: (1) Constituent of ferredoxin (2) Involved in stomatal movement (3) Needed in the synthesis of auxin (4) Component of nitrogenase
Answer: (A)
Solution
Potassium ions drive guard-cell turgor changes, so A matches (2). Sulphur, through its iron-sulphur cluster, is a structural constituent of ferredoxin, so B matches (1). Molybdenum is a component of the nitrogenase enzyme
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