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Mineral Nutrition · Question 48

AIPMT 2003MCQMedium📈 Topic in 25% papers+4−1
1

Boron in green plants assists in

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

Answer

(4) sugar transport

Solution

As per NCERT, boron is required for uptake and utilisation of Ca2+, membrane functioning, pollen germination, cell elongation, cell differentiation and carbohydrate translocation.

⇒ Boron forms sugar–borate complexes that move easily across membranes and helps in translocation of sugars.

∴ Boron assists in sugar transport.

Answer: (4)

Out of syllabusAIPMT 2003

Keep practising — Mineral Nutrition

2

Enzyme first used for nitrogen fixation

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

Passive absorption of minerals depends on

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

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
5

Mg is a component of

  1. chlorophyll
  2. cytochrome
  3. haemoglobin
  4. haemocyanin
Out of syllabusAIPMT 2000
6

Plants take zinc in the form of

  1. ZnSO4
  2. Zn2+
  3. ZnO
  4. Zn
Out of syllabusAIPMT 2000
7

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

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All NEET Botany chapters
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