Q34 / 200 · NEET 2023 (All India) · Botany

Match List I with List II: 
List I List II
A. Iron I. Synthesis of auxin
B. Zinc II. Component of nitrate reductase
C. Boron III.  Activator of catalase
D. Molybdenum IV. Cell elongation and differentiation

Choose the correct answer from the options given below: 

  • A
    A-II, B-IV, C-I, D-III 
  • B
    A-III, B-II, C-I, D-IV
  • C
    A-II, B-III, C-IV, D-I
  • Correct answer
    D
    A-III, B-I, C-IV, D-II

Solution

Iron
  • It is an importantconstituent of proteins involved in the transfer of electrons like ferredoxin and cytochromes.
  • It activates catalase enzyme, and is essential for the formation of chlorophyll.
Zinc
  • It activates various enzymes, especially carboxylases. It is also needed in the synthesis of auxin.
Boron
  • Boron is required for uptake and utilisation of Ca2+, membrane functioning, pollen germination, cell elongation, cell differentiation and carbohydrate translocation.
Molybdenum
  • It is a component of several enzymes, including nitrogenase and nitrate reductase both of which participate in nitrogen metabolism.

Hence, the correct answer is option: 'D'.

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