Mineral Nutrition Test

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Mineral Nutrition Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following pairs of minerals are relatively immobile and are not transported to the mature organs?

A
Magnesium and potassium

B
Sulphur and magnesium

C
Sulphur and calcium

D
Potassium and calcium

Solution

Elements like sulphur and calcium form structural components of the cell. They are relatively immobile and appear first in young tissues and are not transported to the mature organs.

Question 2

1 / -0

Match the following.

Elements	Function
1. C, H, O and N	a. Activation/inhibition of enzymes
2. Mg and P	b. Components of bio-molecules
3. Mo	c. Activates osmotic potential of cell
4. K	d. Components of energy-related chemical compounds

1 - c, 2 - d, 3 - a, 4 - b

1 - b, 2 - d, 3 - a, 4 - c

1 - b, 2 - a, 3 - d, 4 - c

1 - a, 2 - d, 3 - b, 4 - c

Solution

C, H, O and N are components of bio-molecules like carbohydrates. Mg and P are components of energy related chemical compounds like ATP. Mo plays a role in activation or inhibition of enzyme like nitrogenase. K activates osmotic potential of cell by opening and closing of stomata.

Question 3
1 / -0

Which of the following elements is absorbed by the plants in oxyanion form?

A
Potassium

B
Calcium

C
Boron

D
Copper

Solution

Boron is absorbed in oxyanion form as BO₃³⁻ (borate) or B₄O₇^2-.
Question 4
1 / -0

Delayed flowering may be due to the deficiency of

A
N, S and Mo

B
Ca, Cu, K and Mg

C
N, K, S and Mo

D
N, K, Mg, S, Fe, Mn, Zn and Mo

Solution

Deficiency of N, S and Mo causes delayed flowering.
Question 5
1 / -0

Process of reduction of nitrate present in soil to nitrogen is carried out by which of the following?

a. Pseudomonas
b. Cyanobacteria
c. Thiobacillus
d. Chlorobium

A
Only b and d

B
Only a and d

C
Only b and c

D
Only a and c

Solution

Pseudomonas and Thiobacillus perform the reduction of nitrate present in soil to nitrogen. This process is called denitrification.
Question 6
1 / -0

Who gave the 'law of minimum' which states that productivity of a soil depends upon the proportionate amount of deficient mineral?

A
Van Helmont

B
Liebig

C
Woodward

D
De Saussure

Solution

Liebig clearly depicted the essentiality of mineral nutrition and gave the 'law of minimum' which states that productivity of a soil depends upon the proportionate amount of the deficient mineral.
Question 7
1 / -0

Arnon and Hoagland gave the first complete prescription for all known mineral salts required for preparing culture solution. According to them, how much gm/litre NH₄.H₂PO₄ was required to make the complete nutrient solution?

A
0.08

B
0.09

C
2.86

D
0.23

Solution

This is the correct option. Arnon and Hoagland gave the first complete prescription for all known mineral salts required for preparing culture solution. According to them, 0.23 gm/litre NH₄.H₂PO₄ was required to make the complete nutrient solution.
Question 8
1 / -0

Mineral requirements of plants are determined by culture experiments. Which of the following is not a use of culture experiment?

A
It is useful in knowing role of an essential element in the physiology of plants.

B
It is useful in knowing role of an essential element in body structure.

C
It is useful in knowing the role of soil in providing essential nutrients to the plant.

D
It is useful in knowing toxicity due to excess of an element.

Solution

This is the correct option as this is not a use of culture experiment. Culture experiments are hydroponic experiments in which plants are grown from seeds to maturity in a defined nutrient solution in complete absence of soil.
Question 9
1 / -0

Consider the following statements and mark your answer accordingly:

a. Sodium is a non-essential functional element and its deficiency produces leaf necrosis and stunted growth in rice.
b. An essential element has a specific structural or physiological role and without it, plants cannot complete their life cycle.

A
Both the statements are true.

B
Both the statements are false.

C
Statement 'a' is false and 'b' is true.

D
Statement 'b' is false and 'a' is true.

Solution

This is the correct option as statement 'a' is false. Silicon is a non-essential functional element and its deficiency produces leaf necrosis and stunted growth in rice.
Question 10
1 / -0

Macroelements occur in plants in easily detectable quantities. Which of the following is the characteristic of macroelements?

A
They have no significant role in the development of osmotic potential.

B
They are toxic in slight excess.

C
Their concentration is equal to or less than 0.1 mg/gm of dry matter.

D
They build plant body and different protoplasmic constituents.

Solution

This is the correct option as this is the characteristic of macroelements. They build plant body and different protoplasmic constituents.

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Mineral Nutrition Test - 4

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Mineral Nutrition Test - 4

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Question 1

Magnesium and potassium

Sulphur and magnesium

Sulphur and calcium

Potassium and calcium

Solution

Question 2

1 - c, 2 - d, 3 - a, 4 - b

1 - b, 2 - d, 3 - a, 4 - c

1 - b, 2 - a, 3 - d, 4 - c

1 - a, 2 - d, 3 - b, 4 - c

Solution

Question 3

Potassium

Calcium

Boron

Copper

Solution

Question 4

N, S and Mo

Ca, Cu, K and Mg

N, K, S and Mo

N, K, Mg, S, Fe, Mn, Zn and Mo

Solution

Question 5

Only b and d

Only a and d

Only b and c

Only a and c

Solution

Question 6

Van Helmont

Liebig

Woodward

De Saussure

Solution

Question 7

0.08

0.09

2.86

0.23

Solution

Question 8

It is useful in knowing role of an essential element in the physiology of plants.

It is useful in knowing role of an essential element in body structure.

It is useful in knowing the role of soil in providing essential nutrients to the plant.

It is useful in knowing toxicity due to excess of an element.

Solution

Question 9

Both the statements are true.

Both the statements are false.

Statement 'a' is false and 'b' is true.

Statement 'b' is false and 'a' is true.

Solution

Question 10

They have no significant role in the development of osmotic potential.

They are toxic in slight excess.

Their concentration is equal to or less than 0.1 mg/gm of dry matter.

They build plant body and different protoplasmic constituents.

Solution

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