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Question

Which of the following is incorrect regarding essential elements and their role in plants?


A

Chlorine: splitting of water during light reaction.

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B

Magnesium: Constituent of chlorophyll.

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C

Manganese: splitting of water during light reaction.

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D

Sulphur: activates catalase enzyme.

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Solution

The correct option is D

Sulphur: activates catalase enzyme.


The correct option is D.

Explanation for correct option:

  1. The essential mineral required by plants are elements such as nitrogen, phosphorus, potassium, calcium, magnesium, sulphur, boron, chlorine, iron, manganese, zinc, copper, molybdenum, and nickel.
  2. Sulphur is used in the formation of amino acids, proteins, and oils.
  3. It is necessary for chlorophyll formation, promotes nodulation in legumes, and helps develop and activate certain enzymes and vitamins in plants.
  4. So we can say that sulphur is not related to the catalase enzyme.

Explanation for Incorrect option:

Option A:

The elimination of oxygen in photosynthesis by splitting water in presence of light and chlorine.

Option B:

Magnesium is the central core of the chlorophyll molecule in plant tissue and thus, is a constituent of chlorophyll.

Option C:

The Manganese metal is an essential cofactor for the oxygen-evolving complex (OEC) of the photosynthetic machinery which catalyzes the water-splitting reaction in photosystem II.

Final answer: Incorrect regarding essential elements and their role in plants sulphur: activates catalase enzyme.


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