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Role of Ca, Mg and S

Assertion : D...

Question

Assertion : Deficiency of sulphur causes chlorosis in plants. Reason: Sulphur is a constituent of chlorophyll, proteins and nucleic acid

A

Both assertion and reason are true and the reason is the correct explanation for the assertion

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B

Both assertion and reason are true but the reason is not the correct explanation for the assertion

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C

Assertion is true but the reason is false

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D

Both assertion and reason are false

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Solution

The correct option is C Assertion is true but the reason is false
Due to deficiency of suphur, chlorosis often appears first in the young leaves but sulphur is not a constituent of chlorophyll and nucleic acids, it only helps in chlorophyll formation and also found in some amino acids. For example, cysteine, cystine.

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Role of Ca, Mg and S

Standard XII Biology

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