Mineral Nutrition Test

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Mineral Nutrition Test - 14

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following functions is associated with Nostoc?

A
Photosynthesis

B
Transpiration

C
Nitrogen fixation

D
Carbon fixation

Solution

There is two type of nitrogen-fixing bacteria one is free-living and another is symbiotic. Some bacteria and blue-green algae like Nostoc are free-living bacteria and able to fix nitrogen from the atmosphere to enrich the soil with nitrogen and increase the soil fertility. Rhizobium is the symbiotic bacteria that lives in root nodules of leguminous plants and fixes the atmospheric nitrogen in plants in the usable form. Thus, the correct answer is option C.
Question 2
1 / -0

How do animals get their nitrogen?

A
By absorbing nitrogen gas through the skin

B
By eating carbohydrates like sugars and strach

C
From nitrates in their drinking water

D
By eating plants and other animals.
Solution
- Atmospheric nitrogen is fixed by nitrogen-fixing bacteria and makes available to the plants. Animal (herbivore) feed on plants absorbs nitrogen in the form of protein.
- When carnivores feed on other animals (herbivores) get their nitrogen.
  Hence, the correct answer is option D.
Question 3
1 / -0

Which of the following is a micronutrient required by plants?

A
Sulphur

B
Manganese

C
Calcium

D
Potassium

Solution

There are two types of nutrients that absorbed by the plants- macronutrient and micronutrient. Macronutrients are the nutrients that absorbed in the large quantity such as potassium, sulphur, calcium, nitrogen, phosphorus, magnesium etc. Whereas the nutrients required in small amount is called as micronutrients such as manganese, boron, cobalt, molybdenum, zinc, iron, copper and iodine. Thus, the correct answer is option B.
Question 4
1 / -0

Which of these plants contains nitrogen-fixing bacteria?

A
Gram

B
Wheat

C
Mustard

D
Cotton

Solution

There is two type of nitrogen-fixing bacteria one is free-living and another is symbiotic. Rhizobium is the symbiotic bacteria that lives in root nodules of leguminous plants e.g., grams. Rhizobium fixes the atmospheric nitrogen in plants in the usable form. Thus, the correct answer is option A.
Question 5
1 / -0

Which of the following crops would enrich the soil with nitrogen?

A
Apple

B
Pea

C
Sunflower

D
Potato

Solution

The pea plant belongs to the family Fabaceae. The roots of the plant are known to have nodules due to the bacterial symbiotic association. These bacterial cells possess the enzyme nitrogenase which helps the cells to fix the atmospheric nitrogen into nitrate salts and thus, enrich the soil with nitrogen.
Thus, the correct answer is option B.
Question 6
1 / -0

Which element among the following is required in comparatively least quantity for the growth of plant?

A
$$Zn$$

B
$$N$$

C
$$P$$

D
$$Ca$$

Solution

Plants require seventeen essential mineral elements. The essential mineral elements can be grouped into two classes based on the amount required. Macronutrients are the minerals required in large amount. The important macronutrients for plants are carbon, hydrogen, oxygen, nitrogen, phosphorous, sulphur, magnesium, potassium, calcium.
The micronutrients required in lesser amount are zinc, copper, iron, manganese, nickel, molybdenum, chlorine and boron.
Question 7
1 / -0

Which of these is a macronutrient of plant?

A
Copper

B
Iron

C
Chlorine

D
Magnesium

Solution

There are two types of nutrients that absorbed by the plants- macronutrient and micronutrient. Macronutrients are the nutrients that absorbed in the large quantity such as potassium, sulphur, calcium, nitrogen, phosphorus, magnesium etc. Whereas the nutrients required in small amount is called as micronutrients such as manganese, boron, cobalt, molybdenum, zinc, iron, copper and iodine. Thus, the correct answer is option D.
Question 8
1 / -0

Which of the following essential elements is not properly placed in the given category?

A
Cu

B
Zn

C
Mg

D
Mn

Solution

Plants require seventeen essential mineral elements. The essential mineral elements can be grouped into two classes based on the amount required. Macronutrients are the minerals required in large amount. The important macronutrients for plants are carbon, hydrogen, oxygen, nitrogen, phosphorous, sulphur, magnesium, potassium, calcium. The micronutrients required in lesser amount are zinc, copper, iron, manganese, nickel, molybdenum, chlorine and boron.
Therefore, the correct answer is option C.
Question 9
1 / -0

Which of the following metal is a micronutrient for plants?

A
Molybdenum

B
Copper

C
Zinc

D
All of above

Solution

Only a few of the many metals present in the environment are essential to all plants. All the above metals are required in small amounts for the normal functioning of plants.
Question 10
1 / -0

In plant mineral nutrition, elements are called macro or micro-elements depending upon their.

A
Relative presence in plant ash

B
Relative importance in plant growth

C
Relative amount required in plants

D
Relative availability in soil

Solution

There are some nutrients which are required in large amounts, which are called macronutrients like nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur are macronutrients.
There are about seven nutrients essential to plant growth and health that are only needed in very small quantities/amount. In plants, micronutrients are: boron (B), chlorine (Cl), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), and zinc (Zn).
Thus, macro or micro-elements depends on the relative amount required in plants.
Thus, the correct answer is option (C).

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Mineral Nutrition Test - 14

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Mineral Nutrition Test - 14

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SHARING IS CARING

Question 1

Photosynthesis

Transpiration

Nitrogen fixation

Carbon fixation

Solution

Question 2

By absorbing nitrogen gas through the skin

By eating carbohydrates like sugars and strach

From nitrates in their drinking water

By eating plants and other animals.

Solution

Question 3

Sulphur

Manganese

Calcium

Potassium

Solution

Question 4

Gram

Wheat

Mustard

Cotton

Solution

Question 5

Apple

Pea

Sunflower

Potato

Solution

Question 6

$$Zn$$

$$N$$

$$P$$

$$Ca$$

Solution

Question 7

Copper

Iron

Chlorine

Magnesium

Solution

Question 8

Cu

Zn

Mg

Mn

Solution

Question 9

Molybdenum

Copper

Zinc

All of above

Solution

Question 10

Relative presence in plant ash

Relative importance in plant growth

Relative amount required in plants

Relative availability in soil

Solution

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