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Mineral Nutrition — NEET UG Botany PYQs

277 previous year questions from Mineral Nutrition with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

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1

Which micronutrient is required for splitting of water molecule during photosynthesis?

NEET 2023 Solution View → 2

Match Column-I with Column-II. Choose the correct option

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Which of the following mineral ion is not remobilized in plants?

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Match List I with List II: List I List II A. Iron I. Synthesis of auxin B. Zinc II. Component of nitrate reductase C. Boron III. Activator of catalase D. Molybdenum IV. Cell elonga

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Which of the following protects nitrogenase inside the root nodule of a leguminous plant?

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Which one of the following produces nitrogen fixing nodules on the roots of Alnus ?

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Match List -I with List-Il. List - I List - II (a) Manganese (i) Activates the enzyme catalase (b) Magnesium (ii) Required for pollen germination (c) Boron (iii) Activates enzymes

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Which of the following pair represents free living nitrogen fixing aerobic bacteria?

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Match List - I with List - II : Choose the correct answer from the options given below :

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Match Column - I with Column - II. List-I List-II (a) Nitrococcus (i) Denitrification (b) Rhizobium (ii) Conversion of ammonia to nitrite (c) Thiobacillus (iii) Conversion of nitri

NEET 2021 Solution View → 11

Match the following concerning essential elements and their functions in plants (a) Iron (i) Photolysis of water (b) Zinc (ii) Pollen germination (c) Boron (iii) Required for chlor

NEET 2020 Solution View → 12

The product(s) of reaction catalyzed by nitrogenase in root nodules of leguminous plants is/are:

NEET 2020 Solution View → 13

Which of the following elements helps in maintaining the structure of ribosomes?

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In Glycine max, the product of biological nitrogen fixation is transported from the root nodules to other parts as:

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Which of the following is not an insectivorous plant?

NTA Abhyas NEET 2020 Solution View → 16

The most important role of K + ions is that

NTA Abhyas NEET 2020 Solution View → 17

A free-living nitrogen-fixing cyanobacterium which can also form a symbiotic association with the water fern Azolla is

NTA Abhyas NEET 2020 Solution View → 18

Which element is required for the germination of pollen grains?

NTA Abhyas NEET 2020 Solution View → 19

Which of the following is a bacterium involved in denitrification?

NTA Abhyas NEET 2020 Solution View → 20

Which one of the following elements is not an essential micronutrient for plant growth?

NTA Abhyas NEET 2020 Solution View → 21

Which of the following species does not have the ability to fix atmospheric nitrogen?

NTA Abhyas NEET 2020 Solution View → 22

Essential elements are

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If plant material is dried and burnt in a crucible, the residue would contain

NTA Abhyas NEET 2020 Solution View → 24

A mineral deficiency is likely to affect older leaves more than younger leaves if

NTA Abhyas NEET 2020 Solution View → 25

The deficiency of micronutrients, not only affect the growth of a plant but also affects the vital functions such as photosynthesis and cellular respiration. Among the list given b

NTA Abhyas NEET 2020 Solution View → 26

Which of the following is a macronutrient?

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Conversion of N O 2 - → N H 4 + is called ______ and is catalysed by______

NTA Abhyas NEET 2020 Solution View → 28

The conversion of N O 3 - to N O 2 - occurs in

NTA Abhyas NEET 2020 Solution View → 29

Which one of the following organisms has a role in converting ammonia into nitrites?

NTA Abhyas NEET 2020 Solution View → 30

Which one of the following is a micronutrient for plants?

NTA Abhyas NEET 2020 Solution View → 31

During ionic flux, uptake of ions into inner space is

NTA Abhyas NEET 2020 Solution View → 32

Plants can be cultivated in soil less medium where all required nutrients are supplied from the outside in water solution, this method comes under

NTA Abhyas NEET 2020 Solution View → 33

Which one of the following is not a micronutrient?

NTA Abhyas NEET 2020 Solution View → 34

A plant requires magnesium for

NTA Abhyas NEET 2020 Solution View → 35

Select the correctly matched ones from the following. I. Nitrosomonas - Nitrite to nitrate II. Thiobacillus - Denitrification III. Nostoc - Free-living nitrogen-fixer IV. Azotobact

NTA Abhyas NEET 2020 Solution View → 36

Excess of manganese induces a deficiency of

NTA Abhyas NEET 2020 Solution View → 37

In root nodules of leguminous plants, the function of leg-hemoglobin during biological nitrogen fixation is

NTA Abhyas NEET 2020 Solution View → 38

Which amino acid plays a central role in nitrogen metabolism?

NTA Abhyas NEET 2020 Solution View → 39

How many of the following plants have an association with Rhizobium ? [Sweet pea, Lentils, Garden pea, Alfalfa, Alnus , Frankia , Soybean, Clover beans]

NTA Abhyas NEET 2020 Solution View → 40

Which of the following is not caused by the deficiency of minerals?

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Select the incorrect pair from the following.

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One of the free-living, anaerobic nitrogen-fixer is:

NTA Abhyas NEET 2020 Solution View → 43

The conversion of nitrate to nitrogen is called

NTA Abhyas NEET 2020 Solution View → 44

Yellowing of tea leaf is due to the deficiency of

NTA Abhyas NEET 2020 Solution View → 45

The deficiencies of micronutrients, not only affect the growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below

NTA Abhyas NEET 2020 Solution View → 46

Coralloid roots of Cycas are useful in

NTA Abhyas NEET 2020 Solution View → 47

Below diagram showing a technique for the culture of plants. This technique has been successfully employed for the production of which of the following?

NTA Abhyas NEET 2020 Solution View → 48

In nitrogen cycle, which of the following plays an important role?

NTA Abhyas NEET 2020 Solution View → 49

How many protons and electrons are required to fix a dinitrogen?

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Chlorosis is caused due to the deficiency of

NTA Abhyas NEET 2020 Solution View → 51

The process of conversion of organic nitrogen from dead material to ammonia is known as

NTA Abhyas NEET 2020 Solution View → 52

Match the words in column I with the phrases in column II. Choose the answer, which gives the correct combination of the alphabets of the columns. Column-I Column- II (A) Magnesium

NTA Abhyas NEET 2020 Solution View → 53

Manganese toxicity causes:

NTA Abhyas NEET 2020 Solution View → 54

Which of the following is the correct set of micronutrients for plants?

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The enzyme nitrogenase is

NTA Abhyas NEET 2020 Solution View → 56

Which of the following sets of elements delays flowering if their concentration in plants is low?

NTA Abhyas NEET 2020 Solution View → 57

Which of the following statement is correctly paired?

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Zinc is required for synthesis of

NTA Abhyas NEET 2020 Solution View → 59

The macronutrient which is an essential component of cell organic compounds, yet not obtained by plants from soil, is

NTA Abhyas NEET 2020 Solution View → 60

A particular mineral element P activates various enzymes, especially nitrate reductase. Identify P.

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Mark out the number of incorrect statement/s: [I] Some essential elements can alter the osmotic potential of a cell. [II] Nitrogen is required by the meristematic tissues and the m

NTA Abhyas NEET 2020 Solution View → 62

The role of molybdenum is:

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Plants deficient in elemental nitrogen, often show its effect on the biosynthesis of:

NTA Abhyas NEET 2020 Solution View → 64

Which one of the following elements in plants is not remobilised?

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Nitrosomonas and Nitrococcus are associated with which of the following reaction?

NTA Abhyas NEET 2020 Solution View → 66

A small aquatic plant was put in each of the petri dishes X and Y containing different culture solutions. After six weeks, the plant in dish X had the same number of leaves as earl

NTA Abhyas NEET 2020 Solution View → 67

The function of which cell organelle is affected the most due to the deficiency of magnesium?

NTA Abhyas NEET 2020 Solution View → 68

The process of nitrogen cycling by microbes involves multiple steps of oxidation and simultaneous reduction. The following reaction occurring during one such step is brought about

NTA Abhyas NEET 2020 Solution View → 69

Which of the following element is required in minor quantities for the growth of plants but is extremely important for growth of animals?

NTA Abhyas NEET 2020 Solution View → 70

Match the following with correct combination. Column-I Column- II (A) Cascuta (1) Saprophyte (B) Eichhornia (2) Pneumatophore (C) Monotropa (3) Insectivorous plant (D) Rhizophora (

NTA Abhyas NEET 2020 Solution View → 71

Match the following and choose the correct combination from given options. Column-I Column- II (A) Sulphur (1) Chlorophyll (B) Zinc (2) Nitrogenase (C) Magnesium (3) Methionine (D)

NTA Abhyas NEET 2020 Solution View → 72

Find the odd one out with respect to micronutrients.

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Which of the following elements is required in the synthesis of plant growth hormones such as auxin?

NTA Abhyas NEET 2020 Solution View → 74

From the following, how many amino acids contain sulphur in their chemical structure? Methionine, histidine, threonine, cysteine, alanine, tryptophan, valine

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Match the following. Column-I (Mineral) Column-II (Role) a. K (i) Water splitting b. Zn (ii) Energy metabolism c. Mg (iii) Auxin synthesis d. Mn (iv) Stomatal movement

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A micronutrient is the one which is

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A free-living, anaerobic, nitrogen-fixing bacterium is

NTA Abhyas NEET 2020 Solution View → 78

Identify the nutrients that are required. A: This nutrient helps in the utilization of calcium. B: This nutrient is the component of the nitrate reductase enzyme. C: This nutrient

NTA Abhyas NEET 2020 Solution View → 79

In plant nutrition, elements are classified as major or minor depending on

NTA Abhyas NEET 2020 Solution View → 80

Leg-haemoglobin is found in the nodules in roots of leguminous plants. It acts as .......... scavenger and provides............ conditions for the action of nitrogenase enzyme.

NTA Abhyas NEET 2020 Solution View → 81

What is the role of Pseudomonas in the soil?

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Match the items in the column I with those in the column II. Column – I Column – II A. Ca 1. Chlorosis B. Mo 2. Delayed flowering C. Fe 3. Necrosis D. Cl 4. Photolysis of water

NTA Abhyas NEET 2020 Solution View → 83

In leguminous plants, there exists a symbiotic association between the plant and the bacterium. Choose the correct statement regarding this.

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Minerals required for germination of pollen gain on stigma are

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Which one of the following is not an essential mineral element for plants while the remaining three are?

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How many of the following statements describing the functions of Mn are true? I. Mn is required during non-cyclic photophosphorylation. II. Mn competes with iron and magnesium for

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The enzyme nitrogenase is highly sensitive to the molecular oxygen as it requires anaerobic condition. In nodule anaerobic condition is provided by

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Read the given statements. (i) Mg 2+ is an activator for ribulose bisphosphate carboxylase-oxygenase. (ii) Micronutrients are required in large quantities. (iii) Zn 2+ is an activa

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Mg and Fe are needed for plants in

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In soyabean, the fixed nitrogen is transported in the form of

NTA Abhyas NEET 2020 Solution View → 91

Which of the following are critical elements necessary for plant growth?

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Which of the following statements about the nitrogen cycle are false? 1 . Rhizobium and Frankia cause nitrogen fixation in their independent free-living stage. 2 . Azotobacter and

NTA Abhyas NEET 2020 Solution View → 93

Which of the following is not a micronutrient?

JIPMER 2019 Solution View → 94

Which of the following bacteria reduces nitrate in soil into nitrogen?

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Thiobacillus is a group of bacteria helpful in carrying out:

NEET 2019 Solution View → 96

What product is formed when NH ₄⁺ reacts with -ketoglutaric acid?

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Assertion : Glomus shows symbiotic association with higher plants. Reason : Azospirillum and Azotobacter are free living nitrogen fixing bacteria.

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Assertion : Root nodules of legumes are internally pinkish or red coloured. Reason : The legume root nodules contain leghaemoglobin.

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Which group includes all micronutrients?

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Which of the following is not a micronutrient?

NEET 2019 Solution View → 101

In which of the following forms is iron absorbed by plants?

NEET 2018 Solution View → 102

Which of the following is/are free living nitrogen fixers?

NEET 2018 Solution View → 103

In Aulosira, Tolypothrix and Nostoc,

NEET 2018 Solution View → 104

Some functions of nutrient element are given below I. Important constituent of proteins involved in ETS. II. Activator of catalase. III. Important constituent of cytochrome. IV. Es

JIPMER 2017 Solution View → 105

The first stable product of fixation of atmospheric nitrogen in leguminous plant is

JIPMER 2017 Solution View → 106

Some functions of nutrient element are given below I. Important constituent of proteins involved in ETS. II. Activator of catalase. III. Important constituent of cytochrome. IV. Es

NEET 2017 Solution View → 107

The first stable product of fixation of atmospheric nitrogen in leguminous plant is

NEET 2017 Solution View → 108

Which is essential for the growth of the root tip?

NEET 2016 Solution View → 109

In which of the following, all three are macronutrients?

NEET 2016 Solution View → 110

Which of the following is a group of micronutrients for plants?

NEET 2016 Solution View → 111

Assertion: Atmospheric nitrogen gas is always fixed by nitrogen-fixing micro-organisms. Reason : Decomposers release nitrogen gas from dead bodies of plants and animals.

NEET 2016 Solution View → 112

Chlorosis is produced in the leaves due to the deficiency of Fe , Mg , Mn , S or N of these essential elements, those that are exclusive constituents of chlorophyll molecule are

JIPMER 2015 Solution View → 113

During biological nitrogen fixation, inactivation of nitrogenase by oxygen poisoning is prevented by:

NEET 2015 Solution View → 114

The oxygen evolved during photosynthesis comes from water molecules. Which one of the following pairs of elements is involved in this reaction?

NEET 2015 Solution View → 115

Minerals known to be required in large amounts for plant growth include:

NEET 2015 Solution View → 116

Assertion : Nitrogen is one of the most essential elements of human body. Reason : All types of prokaryotic organisms are able to fix nitrogen.

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Assertion : Soil particles, particularly clay and organic matter in soil, contain negative charges that attract positively-charged ions such as Ca ⁺⁺ , K ⁺ and Mg ⁺⁺ . Reason : Ess

NEET 2015 Solution View → 118

Chlorosis is produced in the leaves due to the deficiency of Fe , Mg , Mn , S or N of these essential elements, those that are exclusive constituents of chlorophyll molecule are

NEET 2015 Solution View → 119

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

JIPMER 2014 Solution View → 120

Deficiency symptoms of nitrogen and potassium are visible first in:

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