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Mineral Nutrition · Question 26

AIPMT 2012 (Prelims)MCQMedium📈 Topic in 0% papers+4−1
1

Which one of the following is correctly matched?

  1. Passive transport of nutrients – ATP
  2. Apoplast – Plasmodesmata
  3. Potassium – Readily immobilisation
  4. Bakane of rice seedlings – F. Skoog

Answer

(3) Potassium – Readily immobilisation

Solution

(1) Passive transport takes place along the concentration gradient and does not need ATP – wrong match.

(2) The apoplast is the non-living pathway of cell walls and intercellular spaces; plasmodesmata connect the cytoplasm of cells and form the symplast – wrong match.

(4) Bakane (foolish seedling) disease of rice was studied by E. Kurosawa (gibberellins); F. Skoog worked on cytokinins – wrong match.

(3) In soil, water-soluble potassium is readily converted into a fixed, less available form (immobilisation) – correct match.

Answer: (3)

Out of syllabusAIPMT 2012 (Prelims)

Keep practising — Mineral Nutrition

2

Which one of the following is essential for photolysis of water?

  1. Copper
  2. Manganese
  3. Boron
  4. Zinc
AIPMT 2011 (Mains)
3

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

  1. Iron
  2. Manganese
  3. Cadmium
  4. Phosphorus
Out of syllabusAIPMT 2011 (Mains)
4

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

  1. Phosphorus
  2. Calcium
  3. Potassium
  4. Sulphur
Out of syllabusAIPMT 2011 (Prelims)
5

Nitrifying bacteria

  1. oxidize ammonia to nitrates
  2. convert free nitrogen to nitrogen compounds
  3. convert proteins into ammonia
  4. reduce nitrates to free nitrogen
Out of syllabusAIPMT 2011 (Prelims)
6

The function of leghaemoglobin in the root nodules of legumes is

  1. inhibition of nitrogenase activity
  2. oxygen removal
  3. nodule differentiation
  4. expression of nif gene
Out of syllabusAIPMT 2011 (Prelims)
7

Leguminous plants are able to fix atmospheric nitrogen through the process of symbiotic nitrogen fixation. Which one of the following statements is not correct during this process of nitrogen fixation?

  1. Leghaemoglobin scavenges oxygen and is pinkish in colour.
  2. Nodules act as sites for nitrogen fixation.
  3. The enzyme nitrogenase catalyses the conversion of atmospheric N2 to NH3.
  4. Nitrogenase is insensitive to oxygen.
Out of syllabusAIPMT 2010 (Mains)
8

Study the cycle shown below and select the option which gives correct words for all the four blanks A, B, C and D. [figure]

  1. array|l|l|l|l| A & B & C & D \ Nitrification & Ammonification & Animals & Plants \ array
  2. array|l|l|l|l| A & B & C & D \ Denitrification & Ammonification & Plants & Animals \ array
  3. array|l|l|l|l| A & B & C & D \ Nitrification & Denitrification & Animals & Plants \ array
  4. array|l|l|l|l| A & B & C & D \ Denitrification & Nitrification & Plants & Animals \ array
Out of syllabusAIPMT 2010 (Mains)
9

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

  1. Beijerinckia
  2. Rhodospirillum
  3. Rhizobium
  4. Azotobacter
AIPMT 2010 (Prelims)
10

An element playing important role in nitrogen fixation is

  1. molybdenum
  2. copper
  3. manganese
  4. zinc
Out of syllabusAIPMT 2010 (Prelims)
11

Which one of the following is not a micronutrient?

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

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