Plant Nutrition (Mineral Nutrition in Plants) – MCQs Quiz – 5 1


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Multiple Choice Questions on Plant Nutrition (Mineral Nutrition in Plants). Test No. 5

Plant Nutrition (Mineral Nutrition in Plants) - MCQs Quiz - 5

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Question 1
A nutritionally wild type organism, which does not require any additional growth supplement is known as:
A
Holotype
B
Auxotroph
C
Prototroph
D
Phenotype
Question 2
Which one of the following is not a micronutrient?
A
Magnesium
B
Molybdenum
C
Boron
D
Zinc
Question 3
The function of leghemoglobin in the root nodules of legumes is
A
Oxygen removal
B
Inhibition of nitrogenase activity
C
Expression of nif gene
D
Nodule differentiation
Question 4
Which of the following is a bacterium involved in denitrification?
A
Azotobacter
B
Nitrosomonas
C
Pseudomonas
D
Nitrobacter
Question 5
Which one of the following elements in plants is not remobilized?
A
Calcium
B
Phosphorus
C
Sulphur
D
Potassium
Question 6
Which of the following is a rootless aquatic plant in which a portion of the leaf forms a tiny sac for trapping insects?
A
Utricularia
B
Drosera
C
Nepenthes
D
Dionaea
Question 7
Which of the following is a flowering plant with nodules containing filamentous nitrogen-fixing microorganism?
A
Crotalaria juncea
B
Casuarina equisetifolia
C
Cicer arietinum
D
Cycas revoluta
Question 8
The minerals involved in water-splitting reaction during photosynthesis are
A
Magnesium Chlorine
B
Potassium and Manganese
C
Manganese and Chlorine
D
Molybdenum Manganese
Question 9
If by radiation all nitrogenase enzyme are inactivated, then there will be no
A
Conversion from ammonium to nitrate in soil
B
Conversion from nitrate to nitrite in legumes
C
Fixation of atmospheric nitrogen
D
Fixation of nitrogen in legumes
Question 10
In root nodules of legumes, leg-haemoglobin is important because it
A
Transports oxygen to the root nodule
B
Acts as an oxygen scavenger
C
Provides energy to the nitrogen fixing bacterium
D
Acts as a catalyst in transamination
Question 11
Which of the following minerals activate the enzymes involved in respiration?
A
Nitrogen and phosphorus
B
Magnesium and manganese
C
Potassium and calcium
D
Sulphur and iron
Question 12
Select the matched ones:

a. Nitrosomonas - Nitrite to nitrate

b. Thiobacillus - Denitrification

c. Nostoc - Free-living nitrogen-fixer

d. Azotobacter - Anaerobic nitrogen-fixer

A
a and b only
B
c and d only
C
b and c only
D
b and d only
Question 13
Match the followings an choose the correct combination from the options given:
List - I List - II
a. Sulphur

1.

Chlorophyll
b. Zinc

2.

Nitrogenase
c. Magnesium

3.

Methionine
d. Molybdenum

4.

Auxin
A
a – 1, b – 2, c – 3, d – 4
B
a – 3, b – 4, c – 1, d – 2
C
a – 3, b – 1, c – 2, d – 4
D
a – 2, b – 4, c – 1, d – 3
Question 14
Match the followings an choose the correct combination from the options given:
List - I List - 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
A
a – 3, b – 2, c – 1, d – 5
B
a – 3, b – 4, c – 2, d – 1
C
a – 5, b – 2, c – 3, d – 4
D
a – 4, b – 1, c – 3, d – 2
Question 15
Assertion: Deficiency of sulphur causes chlorosis in plants.

Reason: Sulphur is a constituent of chlorophyll, proteins and nucleic acids.

A
Both the Assertion and the Reason are true and the Reason is a correct explanation of the Assertion.
B
Both the Assertion and the Reason are true but the Reason is not a correct explanation of Assertion.
C
Assertion is true but the Reason is false.
D
Both the Assertion and the Reason are false.
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One thought on “Plant Nutrition (Mineral Nutrition in Plants) – MCQs Quiz – 5

  • Mohan Krishna

    Really helpful to know our disabilities