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Mineral Nutrition

Previous year questions with solutions · 2000 – 2026

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54Questions
29Papers covered
0% Weightage in 2026
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Year-wise statistics questions · papers · average per paper · weightage
YearQuestionsPapersAvg / paperWeightage
20232123.17% ↑4%
20224223.05% ↑83.2%
20211111.67% ↓58.3%
20202124.00% ↑112%
20191111.89% ↓48.1%
20182123.64% ↑109.1%
20162211.74% ↓36.8%
2015321.52.75% ↑54.1%
20141111.79% ↓50.4%
20134223.60% ↓7.2%
20124223.88% ↓25.4%
2011522.55.21% ↓6.3%
2010522.55.56% ↑211.1%
20091111.79% ↓1.8%
20081111.82% ↓69.1%
20073135.88% ↑247.1%
20061111.69% ↓46.6%
20052123.17% ↑74.6%
20041111.82% ↓62.4%
20033134.84% ↓4.8%
20013135.08% ↓8.5%
20003135.56%

⚠ 43 of these questions are out of the current syllabus (marked on the question).

50 questions · newest paper first · page 2 of 2

31

An element playing important role in nitrogen fixation is

  1. molybdenum
  2. copper
  3. manganese
  4. zinc
Out of syllabusAIPMT 2010 (Prelims)
32

Which one of the following is not a micronutrient?

  1. Molybdenum
  2. Magnesium
  3. Zinc
  4. Boron
Out of syllabusAIPMT 2010 (Prelims)
33

Manganese is required in

  1. plant cell wall formation
  2. photolysis of water during photosynthesis
  3. chlorophyll synthesis
  4. nucleic acid synthesis
Out of syllabusAIPMT 2009
34

Nitrogen fixation in root nodules of Alnus is brought about by:

  1. Bradyrhizobium
  2. Frankia
  3. Clostridium
  4. Azorhizobium
AIPMT 2008
35

Which of the following is a flowering plant with nodules containing filamentous nitrogen-fixing micro-organism?

  1. Crotalaria juncea
  2. Cycas revoluta
  3. Cicer arietinum
  4. Casuarina equisetifolia
AIPMT 2007
36

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

  1. Zn
  2. Cu
  3. Ca
  4. Mn
Out of syllabusAIPMT 2007
37

A plant requires magnesium for

  1. protein synthesis
  2. chlorophyll synthesis
  3. cell wall development
  4. holding cells together
Out of syllabusAIPMT 2007
38

Sulphur is an important nutrient for optimum growth and productivity in

  1. oilseed crops
  2. pulse crops
  3. cereals
  4. fibre crops.
Out of syllabusAIPMT 2006
39

All of the following statements concerning the actinomycetous filamentous soil bacterium Frankia are correct except that Frankia

  1. can induce root nodules on many plant species
  2. can fix nitrogen in the free-living state
  3. forms specialized vesicles in which the nitrogenase is protected from oxygen by a chemical barrier involving triterpene hopanoids
  4. like Rhizobium, it usually infects its host plant through root hair deformation and stimulates cell proliferation in the host's cortex.
AIPMT 2005
40

The deficiencies of micronutrients, not only affect growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport?

  1. Co, Ni, Mo
  2. Ca, K, Na
  3. Mn, Co, Ca
  4. Cu, Mn, Fe
Out of syllabusAIPMT 2005
41

If by radiation all nitrogenase enzymes are inactivated, then there will be no

  1. fixation of nitrogen in legumes
  2. fixation of atmospheric nitrogen
  3. conversion from nitrate to nitrite in legumes
  4. conversion from ammonium to nitrate in soil.
Out of syllabusAIPMT 2004
42

Plants deficient of element zinc, show its effect on the biosynthesis of plant growth hormone

  1. auxin
  2. cytokinin
  3. ethylene
  4. abscisic acid.
AIPMT 2003
43

Gray spots of oat are caused by deficiency of

  1. Cu
  2. Zn
  3. Mn
  4. Fe
Out of syllabusAIPMT 2003
44

Boron in green plants assists in

  1. activation of enzymes
  2. acting as enzyme co-factor
  3. photosynthesis
  4. sugar transport
Out of syllabusAIPMT 2003
45

Enzyme first used for nitrogen fixation

  1. nitrogenase
  2. nitroreductase
  3. transferase
  4. transaminase
AIPMT 2001
46

Passive absorption of minerals depends on

  1. temperature
  2. temperature and metabolic inhibitor
  3. metabolic inhibitor
  4. humidity
Out of syllabusAIPMT 2001
47

Roots of which plant contain a red pigment which has affinity for oxygen?

  1. Carrot
  2. Soybean
  3. Mustard
  4. Radish
Out of syllabusAIPMT 2001
48

Mg is a component of

  1. chlorophyll
  2. cytochrome
  3. haemoglobin
  4. haemocyanin
Out of syllabusAIPMT 2000
49

Plants take zinc in the form of

  1. ZnSO4
  2. Zn2+
  3. ZnO
  4. Zn
Out of syllabusAIPMT 2000
50

When the plants are grown in magnesium deficient but urea rich soil, the symptoms expressed are

  1. yellowish leaves
  2. colourless petiole
  3. dark green leaves
  4. shoot apex dies
Out of syllabusAIPMT 2000