(A) Sulphur is an essential element and a constituent of amino acids like $Cysteine$,$Cystine$,and $Methionine$.Sulphur is present in the soil primari

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If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

(A) Sulphur is an essential element and a constituent of amino acids like $Cysteine$,$Cystine$,and $Methionine$.Sulphur is present in the soil primarily in the form of organic matter or inorganic compounds.Sulphur-oxidizing bacteria (such as $Thiobacillus$) are required to convert these forms into $SO_4^{2-}$ (sulphate ions).Plants then absorb sulphur from the soil specifically in the form of $SO_4^{2-}$ ions.Therefore,both the Assertion and the Reason are correct,and the Reason provides the correct explanation for the Assertion.

Class 11 Biology Mineral Nutrition Mix Examples - Mineral Nutrition

Medium

Assertion : Plants absorb sulphur in the form of sulphate ions.
Reason : Sulphur bacteria are required for the formation of sulphate.

AIIMS 2007 All AIIMS

A
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
C
If the Assertion is correct but Reason is incorrect.
D
If both the Assertion and Reason are incorrect.

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Identify the correct pair:
Column-$I$ Column-$II$
$P$. Phosphorus $I$. Splitting of water to liberate oxygen during photosynthesis
$Q$. Potassium $II$. Constituent of cell membranes and all nucleotides
$R$. Magnesium $III$. In more abundant quantities in the meristematic tissue,buds,leaves,and root tips
$S$. Manganese $IV$. Constituent of the ring structure of chlorophyll and helps to maintain the ribosome structure

$P - Q - R - S$

Medium

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Select the correct match for $X$ and $Y$:
Column $X$ Column $Y$
$(1)$ Mycorrhiza $(P)$ Free-living $N_2$-fixer
$(2)$ Nostoc $(Q)$ Phosphorus absorption
$(3)$ Azospirillum $(R)$ Leguminous plants
$(4)$ Rhizobium $(S)$ Autotrophic $N_2$-fixer

Medium

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Study the following columns and choose the correct match.
Column-$I$ Column-$II$
$(A)$ Photolysis of water $(1)$ Zinc
$(B)$ Diazotrophy $(2)$ Copper
$(C)$ Cytochrome-c oxidase $(3)$ Manganese
$(D)$ Biosynthesis of $IAA$ $(4)$ Molybdenum
$(5)$ Boron

Medium

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Which of the following is a free-living nitrogen-fixing bacterium?

Medium

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$A$ farmer adds/supplies $Na, Ca, Mg$ and $Fe$ regularly to his field and yet he observes that the plants show deficiency of $Ca, Mg$ and $Fe$. Give a valid reason and suggest a way to help the farmer improve the growth of plants.

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Column-$I$	Column-$II$
$P$. Phosphorus	$I$. Splitting of water to liberate oxygen during photosynthesis
$Q$. Potassium	$II$. Constituent of cell membranes and all nucleotides
$R$. Magnesium	$III$. In more abundant quantities in the meristematic tissue,buds,leaves,and root tips
$S$. Manganese	$IV$. Constituent of the ring structure of chlorophyll and helps to maintain the ribosome structure

Column $X$	Column $Y$
$(1)$ Mycorrhiza	$(P)$ Free-living $N_2$-fixer
$(2)$ Nostoc	$(Q)$ Phosphorus absorption
$(3)$ Azospirillum	$(R)$ Leguminous plants
$(4)$ Rhizobium	$(S)$ Autotrophic $N_2$-fixer

Column-$I$	Column-$II$
$(A)$ Photolysis of water	$(1)$ Zinc
$(B)$ Diazotrophy	$(2)$ Copper
$(C)$ Cytochrome-c oxidase	$(3)$ Manganese
$(D)$ Biosynthesis of $IAA$	$(4)$ Molybdenum
	$(5)$ Boron

Assertion : Plants absorb sulphur in the form of sulphate ions.Reason : Sulphur bacteria are required for the formation of sulphate.

Similar Questions

Select the correct match for $X$ and $Y$:Column $X$Column $Y$$(1)$ Mycorrhiza$(P)$ Free-living $N_2$-fixer$(2)$ Nostoc$(Q)$ Phosphorus absorption$(3)$ Azospirillum$(R)$ Leguminous plants$(4)$ Rhizobium$(S)$ Autotrophic $N_2$-fixer

Study the following columns and choose the correct match.Column-$I$Column-$II$$(A)$ Photolysis of water$(1)$ Zinc$(B)$ Diazotrophy$(2)$ Copper$(C)$ Cytochrome-c oxidase$(3)$ Manganese$(D)$ Biosynthesis of $IAA$$(4)$ Molybdenum$(5)$ Boron

Which of the following is a free-living nitrogen-fixing bacterium?

$A$ farmer adds/supplies $Na, Ca, Mg$ and $Fe$ regularly to his field and yet he observes that the plants show deficiency of $Ca, Mg$ and $Fe$. Give a valid reason and suggest a way to help the farmer improve the growth of plants.

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Assertion : Plants absorb sulphur in the form of sulphate ions.
Reason : Sulphur bacteria are required for the formation of sulphate.

Select the correct match for $X$ and $Y$:
Column $X$ Column $Y$
$(1)$ Mycorrhiza $(P)$ Free-living $N_2$-fixer
$(2)$ Nostoc $(Q)$ Phosphorus absorption
$(3)$ Azospirillum $(R)$ Leguminous plants
$(4)$ Rhizobium $(S)$ Autotrophic $N_2$-fixer

Study the following columns and choose the correct match.
Column-$I$ Column-$II$
$(A)$ Photolysis of water $(1)$ Zinc
$(B)$ Diazotrophy $(2)$ Copper
$(C)$ Cytochrome-c oxidase $(3)$ Manganese
$(D)$ Biosynthesis of $IAA$ $(4)$ Molybdenum
$(5)$ Boron