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NEET • BIOLOGY • MINERAL NUTRITION

Mineral nutrition practice · Easy

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Showing 1-30 of 71 questions

1 Easy

1 of 71

Understanding +4 | -1

Which of the following elements are most readily mobilized?

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Correct option: A

Phosphorous, nitrogen, potassium

Option A (Phosphorous, nitrogen, potassium) is correct because these elements are readily remobilized from older leaves to younger, developing parts of the plant.

2 Easy

2 of 71

Understanding +4 | -1

The plants grown in "

Mg

" deficient but area sprayed soil would show?

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Correct option: C

Yellowing of leaves

Option C (Yellowing of leaves) is correct because magnesium is a component of chlorophyll, and its deficiency leads to chlorosis (yellowing).

3 Easy

3 of 71

Understanding +4 | -1

Which of the following is an example of nutrient in its reduced form?

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Correct option: C

Nitrogen in

N{H_3}

Option C (Nitrogen in

NH_3

) is correct because nitrogen in ammonia (

NH_3

) has a lower oxidation state (-3) compared to its elemental state, indicating it is in a reduced form.

4 Easy

4 of 71

Understanding +4 | -1

Crop rotation is used by farmers to increase

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Correct option: A

Soil fertility

Option A (Soil fertility) is correct because crop rotation helps to improve soil structure, nutrient availability, and reduce pest and disease buildup, all contributing to increased soil fertility.

5 Easy

5 of 71

Understanding +4 | -1

For the limited nitrogen that is present in the soil, microbes compete with

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Correct option: B

Plants

Option B (Plants) is correct because microbes in the soil compete with plants for the limited nitrogen available.

6 Easy

6 of 71

Understanding +4 | -1

Number of ATP required for the formation of

4N{H_3}

molecules via symbiotic nitrogen fixation is

View answer and explanation

Correct option: B

Option B (32) is correct because symbiotic nitrogen fixation requires 8 ATP per

NH_3

molecule, so for 4

NH_3

molecules, it requires 32 ATP.

7 Easy

7 of 71

Remembering +4 | -1

Molybdenum is the essential constituent of

View answer and explanation

Correct option: A

Nitrogenase

Option A (Nitrogenase) is correct because molybdenum is a crucial component of the nitrogenase enzyme, which is essential for nitrogen fixation in plants and bacteria.

8 Easy

8 of 71

Analyzing +4 | -1

Read the following statements:
A. Frankia produce nitrogen fixing nodules in the roots of leguminous plant-Alnus
B. Nodule formed, establishes an indirect vascular connection with the host for exchange of nutrients.
C. Glutamate is produced by reductive amination.
D. Nitrogenase is capable of nitrogen reduction which is present exclusively in prokaryotes.
How many of the above statements are correct –

View answer and explanation

Correct option: C

Option C (2) is correct. Statements C and D are correct. Frankia forms nodules in non-leguminous plants. Nodules have a direct vascular connection.

9 Easy

9 of 71

Remembering +4 | -1

Which of the following is considered as partial mineral elements in plants?

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Correct option: C

Nitrogen

Option C (Nitrogen) is correct because nitrogen is a macronutrient and is considered a partial mineral element in plants.

10 Easy

10 of 71

Understanding +4 | -1

In which of the following conditions, plants cannot be grown?

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Correct option: C

Both (a) and (b)

Option C (Both (a) and (b)) is correct because plants require both macroelements and microelements for their growth and survival. Deficiency of either can prevent proper growth.

11 Easy

11 of 71

Understanding +4 | -1

Which of the following method is close to hydroponics and has the same principle?

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Correct option: A

Aeroponics

Option A (Aeroponics) is correct because aeroponics, like hydroponics, involves growing plants without soil, using nutrient-rich water solutions.

12 Easy

12 of 71

Remembering +4 | -1

In the final phase of mineral absorption, ions are taken up into the …… space of cells

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Correct option: B

Inner

Option B (Inner) is correct because in the final phase of mineral absorption, ions are taken up into the inner space (vacuole) of the cells.

13 Easy

13 of 71

Understanding +4 | -1

Major disadvantages of hydroponics include

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Correct option: C

Both (a) and (b)

Option C (Both (a) and (b)) is correct because setting up a hydroponic system can be expensive, and it requires a certain level of technical knowledge to manage effectively.

14 Easy

14 of 71

Remembering +4 | -1

Enzyme required for nitrogen fixation is

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Correct option: A

Nitrogenase

Option A (Nitrogenase) is correct because nitrogenase is the enzyme complex responsible for the reduction of atmospheric nitrogen to ammonia.

15 Easy

15 of 71

Understanding +4 | -1

Plant deficient of element zinc, shows its effects on the biosynthesis of plant growth hormone

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Correct option: C

Auxin

Option C (Auxin) is correct because zinc is required for the biosynthesis of tryptophan, a precursor to the plant growth hormone auxin.

Explore Other Chapters in BIOLOGY

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ANIMAL KINGDOM 756 MCQs PLANT KINGDOM 415 MCQs ANATOMY OF FLOWERING PLANTS 404 MCQs MOLECULAR BASIS OF INHERITANCE 404 MCQs CHEMICAL COORDINATION AND INTEGRATION 387 MCQs PRINCIPLE OF INHERITANCE AND VARIATION 374 MCQs

16 Easy

16 of 71

Remembering +4 | -1

Insectivorous plants eats insects for their requirement of

View answer and explanation

Correct option: B

Nitrogen

Option B (Nitrogen) is correct because insectivorous plants consume insects to supplement their nitrogen intake, as they often grow in nitrogen-poor soils.

17 Easy

17 of 71

Remembering +4 | -1

Which of the following is used as a chelating agent in hydroponics?

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Correct option: A

EDTA

Option A (EDTA) is correct because EDTA is commonly used as a chelating agent in hydroponics to keep micronutrients soluble and available to plants.

18 Easy

18 of 71

Remembering +4 | -1

Quantity of macronutrients that is generally found in plant is

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Correct option: B

Large

Option B (Large) is correct because macronutrients are required in relatively large quantities by plants for their growth and development.

19 Easy

19 of 71

Understanding +4 | -1

For the proper management of diseased conditions in hydroponics, it is important to

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Correct option: D

Both (a) and (b)

Option D (Both (a) and (b)) is correct because changing the nutrient solution and media regularly helps prevent the buildup of pathogens and maintain a healthy growing environment.

20 Easy

20 of 71

Remembering +4 | -1

‘mottled chlorosis’ on the leaves occurs due to the deficiency of

View answer and explanation

Correct option: C

Potassium

Option C is correct because 'mottled chlorosis' on leaves, which is characterized by yellowing between the veins, is a common symptom of potassium deficiency in plants.

21 Easy

21 of 71

Understanding +4 | -1

The function of leghaemoglobin in the root nodules of legumes is

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Correct option: A

Oxygen removal

Option A (Oxygen removal) is correct because leghaemoglobin binds to oxygen, maintaining a low oxygen concentration in the root nodule to protect nitrogenase.

22 Easy

22 of 71

Remembering +4 | -1

Name the essential element that is considered as the component of energy related to chemical compound like chlorophyll

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Correct option: A

Magnesium

Option A (Magnesium) is correct because magnesium is a central component of the chlorophyll molecule, which is essential for photosynthesis and energy production in plants.

23 Easy

23 of 71

Understanding +4 | -1

Which of the following statements are correct about mineral absorption in plants?

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Correct option: D

All of the above

Option D (All of the above) is correct because all the statements accurately describe mineral absorption in plants, including the passive uptake into the apoplast and active uptake into the symplast.

24 Easy

24 of 71

Remembering +4 | -1

Bacteria and fungi developing on dead decaying organisms are

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Correct option: C

Saprophytes

Option C is correct because saprophytes are organisms, like bacteria and fungi, that obtain nutrients from dead and decaying organic matter.

25 Easy

25 of 71

Understanding +4 | -1

Read the functions given below and identify the concerned nutrient
I. Activator of catalase
II. Important constituent of cytochrome
III. Important constituent of proteins involved in ETS
IV. Essential for chlorophyll synthesis

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Correct option: B

Option B (Fe) is correct because iron is an activator of catalase, an important constituent of cytochrome, a constituent of proteins involved in ETS, and essential for chlorophyll synthesis.

26 Easy

26 of 71

Remembering +4 | -1

The technique of growing plants in a nutrient solution in the complete absence of soil is called

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Correct option: C

Both (a) and (b)

Option B (Hydroponics) is correct because hydroponics is defined as growing plants in nutrient solutions without soil.

27 Easy

27 of 71

Understanding +4 | -1

The entry and exit of ions to and from the symplast requires the expenditure of

View answer and explanation

Correct option: B

Metabolic energy

Option B (Metabolic energy) is correct because the symplast pathway involves crossing cell membranes, which requires energy for active transport of ions.

28 Easy

28 of 71

Remembering +4 | -1

Select from the given options, which is the most commonly obtained commercial flower crop in hydroponics?

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Correct option: D

Carnation

Option D (Carnation) is correct because carnations are a popular and commercially viable flower crop often grown using hydroponic techniques.

29 Easy

29 of 71

Understanding +4 | -1

Rhizobium and Frankia

a. Are heterotrophs

b. Use solar energy to synthesize their food

c. Are symbiotic nitrogen fixing bacteria

Select the correct option.

View answer and explanation

Correct option: C

Only a and c are correct

Option C (Only a and c are correct) is correct because both Rhizobium and Frankia are heterotrophic and symbiotic nitrogen-fixing bacteria.

30 Easy

30 of 71

Remembering +4 | -1

Which of the following gene is responsible for biological nitrogen fixation?

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Correct option: B

Nif gene

Option B is correct because the 'nif' gene (nitrogen fixation gene) is responsible for encoding the enzymes, including nitrogenase, required for biological nitrogen fixation.

Revision notes and key takeaways

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Key Takeaways

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