Mineral Nutrition Test

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Mineral Nutrition Test - 63

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Weekly Quiz Competition

Question 1
1 / -0

Cell in root nodule is promoted by:

A
Auxin secreted by plant and Cytokinin secreted by bacteria

B
Cytokinin secreted by plant and Auxin secreted by bacteria

C
Auxin secreted by plants only

D
Nitrogenase secreted by bacteria only

Solution

In the formation of root nodules, in leguminous plants, cortical cells in the root secrete auxins and cytokinins are secreted by Rhizobium bacteria. They promote cell division, gradually leads to the formation of root nodules.
So, the correct option is ‘Auxins secreted by plant and cytokinins secreted by bacteria’.
Question 2
1 / -0

Which one of the following micro nutrient is required plants in least quantity?

A
$$Mo$$

B
$$B$$

C
$$Zn$$

D
$$Mn$$
Question 3
1 / -0

Which element is common to nucleic acids, phospholip ATP, ADP, NADPH, NAD, FAD?

A
Calcium

B
Boron

C
Zinc

D
Phosphorus
Question 4
1 / -0

Choose the correct answer from the alternatives given.
Micronutrients are needed in very small amount because:

A
most of them are mobile in the plant

B
most function as cofactors in enzymes

C
most are supplied in large enough quantities in soil

D
they play only a minor role in the health of the plant.

Solution

Micronutrients are trace elements such as vitamins and minerals. They differ from macronutrients, like carbohydrates, protein and fat, because they are necessary only in very small amounts, generally, these are utilized by plants as cofactors for certain enzymes, eg Mo for nitrogenase. So, the correct option is 'most function as cofactors in enzymes'.
Question 5
1 / -0

Choose the correct answer from the alternatives given.
Nitrogen fixation by bacteria requires the enzyme:

A
decarboxylase

B
nitrogenase

C
nitrogen deaminase

D
nitrodioxidase

Solution

Biological nitrogen fixation (BNF) occurs when atmospheric nitrogen is converted to ammonia by an enzyme called nitrogenase. Nitrogenases are enzymes used by some organisms to fix atmospheric nitrogen gas (N2). There is only one known family of enzymes that accomplishes this process. So, the correct answer is "nitrogenase".
Question 6
1 / -0

Choose the correct answer from the alternatives given.
Absence of $$Mg^{++}$$ ions from plant tissues results in:

A
Plasmolysis

B
Hydrolysis

C
Chlorosis

D
Necrosis

Solution

Excess potassium, generally due to fertilizers, further aggravates the stress from magnesium deficiency, as does aluminium toxicity. This causes the main symptom of magnesium deficiency, interveinal chlorosis, or yellowing between leaf veins, which stay green, giving the leaves a marbled appearance. So, the correct answer is "Chlorosis".
Question 7
1 / -0

Choose the correct answer from the alternatives given.
Which of the following minerals is required for all phosphorylation reactions?

A
Nitrogen

B
Iron

C
Magnesium

D
Phosphorus

Solution

Phosphorylation is a biochemical process that involves the addition of phosphate to an organic compound.
So the correct answer is "phosphorus".
Question 8
1 / -0

Activation energy is required for

A
Exothermal reactions

B
Endothermal reactions

C
Enzyme mediated reactions

D
Starting all biochemical reactions

Solution

Activation energy is the minimum amount of energy required to initiate a chemical reaction.
So, the correct answer is 'Starting all biochemical reactions'.

Question 9

1 / -0

Match the column-I and II, choose the correct option.

Column I	Column II
P. Silicon	(i) In the structure of coenzymes
Q. Nickel	(ii) Required for nitrogen fixation in leguminous plants
R. Sulphur	(iii) As a component of cell walls
S. Cobalt	(iv) Required for iron absorption

$$P(iii), Q(iv), R(ii) S(i)$$

$$P(ii), Q(iv), R(ii) S(i)$$

$$P(iii), Q(iv), R(i) S(ii)$$

$$P(ii), Q(iii), R(i) S(iv)$$

Solution

Silicon is found in the plant cell walls which are secondarily thickened.
Nickel is involved in iron absorption.
Sulphur is a component of coenzyme-A.
Cobalt is required by Rhizobium and other nitrogen-fixing microorganisms to fix nitrogen in leguminous plants.

Hence, the correct match is- P(iii),Q(iv),R(i),S(ii)

So, the correct answer is C.

Question 10
1 / -0

Enzyme pepsin acts upon food at a pH of about

A
3 to split proteins

B
2 to split carbohydrate

C
7 to change protein into peptones

D
2 to change protein in amino acids

Solution

Pepsin enzymes are the enzymes that help in degradation of the proteins into various components like peptones. These enzymes are mostly found in stomach which has acidic pH.
Hence, the correct answer is '3 to split proteins'.

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Mineral Nutrition Test - 63

Result

Mineral Nutrition Test - 63

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SHARING IS CARING

Question 1

Auxin secreted by plant and Cytokinin secreted by bacteria

Cytokinin secreted by plant and Auxin secreted by bacteria

Auxin secreted by plants only

Nitrogenase secreted by bacteria only

Solution

Question 2

$$Mo$$

$$B$$

$$Zn$$

$$Mn$$

Question 3

Calcium

Boron

Zinc

Phosphorus

Question 4

most of them are mobile in the plant

most function as cofactors in enzymes

most are supplied in large enough quantities in soil

they play only a minor role in the health of the plant.

Solution

Question 5

decarboxylase

nitrogenase

nitrogen deaminase

nitrodioxidase

Solution

Question 6

Plasmolysis

Hydrolysis

Chlorosis

Necrosis

Solution

Question 7

Nitrogen

Iron

Magnesium

Phosphorus

Solution

Question 8

Exothermal reactions

Endothermal reactions

Enzyme mediated reactions

Starting all biochemical reactions

Solution

Question 9

$$P(iii), Q(iv), R(ii) S(i)$$

$$P(ii), Q(iv), R(ii) S(i)$$

$$P(iii), Q(iv), R(i) S(ii)$$

$$P(ii), Q(iii), R(i) S(iv)$$

Solution

Question 10

3 to split proteins

2 to split carbohydrate

7 to change protein into peptones

2 to change protein in amino acids

Solution

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