Question:

Deficiency of sulphur causes chlorosis in plants. Sulphur is a constituent of chlorophyll, proteins and nucleic acids.

Updated On: Jul 28, 2022
  • If both Assertion and Reason are true and Reason is the correct explanation of Assertion
  • If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
  • If Assertion is true but Reason is false
  • If both Assertion and Reason are false.
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The Correct Option is C

Solution and Explanation

Due to deficiency of sulphur, chlorosis often appears first in the young leaves but sulphur is not a constituent of chlorophyll and nucleic acid it only helps in chlorophyll formation and also found in some amino acids e.g., cysteine, cystine.
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Concepts Used:

Essential Mineral Elements

Mineral Elements:

A large number of inorganic elements are necessary for all the life processes and hence should be taken into our diets in adequate amounts. Any deficiency in these minerals leads to an abnormality in the metabolic functioning of the body.

Essential Mineral Elements in Plants

There are two types of minerals that are essential for plant growth, such as:

1. Macrominerals

Minerals like Phosphorous, carbon, silicon, magnesium, hydrogen, sodium, nitrogen, potassium, calcium, oxygen, selenium, and sulfur are required in abundance for proper plant growth and are also found abundantly in plant tissues. Hence, they are known as macrominerals.

2. Microminerals

A few minerals like Iron, boron, zinc, cobalt, chlorine, nickel, manganese, copper, molybdenum, etc. are required in lesser quantities for proper growth by the plants and therefore, they are called microminerals. Further they are also called trace elements.