Mineral Nutrition Test

Question 1
1 / -0

Refer the given passage and answer the following question.

At present the primary nutrient which limits the agricultural yield is nitrogen (N), Some plants are capable to produce more N$$_2$$ than they consume. These plants show a symbiotic relationship with N$$_2$$ - fixing bacteria such as Rhizobium. These bacteria produce root nodules in leguminous plants and convert atmospheric N$$_2$$ is not nitrogenous compounds. Rhizobium bacteria are gram-negative bacteria. Which show host specificity and fix N$$_2$$ in the presence of a red pigment called leghaemoglobin. It protects nitrogen-fixing enzyme nitrogenase from oxygen.

Which of the following statements is incorrect?

A
Leghaemoglobin functions as oxygen scavenger during $$N_2$$ - fixation.

B
The enzyme nitrogenase, which is required to fix atmospheric $$N_2$$ is active in the presence as well as the absence of oxygen.

C
N, P, and K are referred to as critical elements for crop plants as they easily become deficient in soil due to higher plant requirement and repeated cultivation.

D
The coordinated activities of the legume and Rhizobium bacteria depends on the chemical interaction between the symbiotic partners.

Question 2
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An association which fixes nitrogen through non-nodulation is

A
Maize roots with Spirillum notatum

B
Digitaria roots with Spirillum notatum

C
Coralloid roots of Cycas with Anabena

D
All of the above

Question 3
1 / -0

Criteria for essentiality in mineral nutrition were first shown by

A
Arnon

B
Liebig

C
Steward

D
Levitt

Question 4
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Nitrogen, phosphorus, potassium are examples of

A
micro-nutrients

B
macronutrients

C
fertilizers

D
both (a) and (b)

Question 5
1 / -0

Reclamation and little leaf disease is caused by deficiency of

A
Zn and Mo

B
Cu and Zn

C
Cu and B

D
Mn and Cu

Question 6
1 / -0

Single filament of Nostoc with mucilage sheath is called as

A
Colony

B
Mycelium

C
Trichome

D
Hyphae

Question 7
1 / -0

Which of the following is correct set of micronutrient for plants?

A
Mg, Si, Fe, Cu, Ca

B
Cu, Fe, Zn, B, Mn

C
Mg, Fe, Zn, B, Mn

D
Mo, Zn, CI, Mg, Ca

Question 8
1 / -0

Match the following and choose the correct combination.
List-A List-B
(A)Mg (i) Splitting of $$H_2O$$ during photosynthesis.
(B)Mo (ii) Germination of pollen grains.
(C)Mn (iii) Constituent of chlorophyll.
(D)B (iv) Component of nitrate reductase.

A
A- (ii), B- (v), C- (iv), D- (i)

B
A- (iii), B- (iv), C- (ii), D- (i)

C
A- (iii), B- (v), C- (iv), D- (i)

D
A- (iii), B- (iv), C- (i), D- (ii)

Question 9

1 / -0

	List I (Elements)		List II (Component co-factor)
(A)	Magnesium	(I)	Energy currency of the cell
(B)	Sulphur	(II)	Enzyme catalysing biological nitrogen
(C)	Phosphorous	(III)	Enzyme catalysing phosphorylation of glucose
(D)	Molybdenum	(IV)	Enzyme catalysing decarboxylation of oxalosuccinic acid
		(V)	Amino acid coded by AUG

Study the list and match the following.

(A)- (III), (B)- (V), (C)- (I), (D)- (II)

(A)- (V), (B)- (IV), (C)- (III), (D)- (II)

(A)- (II), (B)- (I), (C)- (V), (D)- (III)

(A)- (I), (B)- (III), (C)- (IV), (D)- (V)

Question 10
1 / -0

Identify the role of lectins in the formation of root nodules in legumes.

A
Recognition of compatible Rhizobium by host.

B
Formation of peribacteroid membrane.

C
Formation of infection thread.

D
Formation of shepherd's crook.

Submit Test

List-A	List-B
(A)Mg	(i) Splitting of $$H_2O$$ during photosynthesis.
(B)Mo	(ii) Germination of pollen grains.
(C)Mn	(iii) Constituent of chlorophyll.
(D)B	(iv) Component of nitrate reductase.

Mineral Nutriti...

Question 1

Leghaemoglobin functions as oxygen scavenger during $$N_2$$ - fixation.

The enzyme nitrogenase, which is required to fix atmospheric $$N_2$$ is active in the presence as well as the absence of oxygen.

N, P, and K are referred to as critical elements for crop plants as they easily become deficient in soil due to higher plant requirement and repeated cultivation.

The coordinated activities of the legume and Rhizobium bacteria depends on the chemical interaction between the symbiotic partners.

Question 2

Maize roots with Spirillum notatum

Digitaria roots with Spirillum notatum

Coralloid roots of Cycas with Anabena

All of the above

Question 3

Arnon

Liebig

Steward

Levitt

Question 4

micro-nutrients

macronutrients

fertilizers

both (a) and (b)

Question 5

Zn and Mo

Cu and Zn

Cu and B

Mn and Cu

Question 6

Colony

Mycelium

Trichome

Hyphae

Question 7

Mg, Si, Fe, Cu, Ca

Cu, Fe, Zn, B, Mn

Mg, Fe, Zn, B, Mn

Mo, Zn, CI, Mg, Ca

Question 8

A- (ii), B- (v), C- (iv), D- (i)

A- (iii), B- (iv), C- (ii), D- (i)

A- (iii), B- (v), C- (iv), D- (i)

A- (iii), B- (iv), C- (i), D- (ii)

Question 9

(A)- (III), (B)- (V), (C)- (I), (D)- (II)

(A)- (V), (B)- (IV), (C)- (III), (D)- (II)

(A)- (II), (B)- (I), (C)- (V), (D)- (III)

(A)- (I), (B)- (III), (C)- (IV), (D)- (V)

Question 10

Recognition of compatible Rhizobium by host.

Formation of peribacteroid membrane.

Formation of infection thread.

Formation of shepherd's crook.

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